No way. I play him properly too.
So, because you seem to be struggling with him I decided to watch your most recent replay. A few friendly hints.
1. You went stout tango quelling blade starting items. The first two are fine, but quelling blade seems like a weird choice to me. In offlane you need more defensive items than last hitting, exp is more important than gold after all for BH. You had a lich with you tho, so it was not so bad.
2. This was more of a team thing, but noone went to secure top rune. If you are duel laning one of you should go up to get it. You would have got an illusion rune if you checked, which is very nifty for offlaners to lock camps and do a little scouting etc. Even solo it can be worth giving up some of your block to do it.
3. There is a nifty trick with BH during the laning phase. If you go invis and hit immediately you will still be in the fade time, but get the bonus damage from the shadow walk hit. This means you get the bonus damage on two hits, which is helpful for last hitting and for fighting early on. It only works with 1 or 2 levels tho as the fade time gets shorter with levels.
4. You disrupted a couple of pulls, good job! But then you kinda left the lane at level 3, despite being under no significant pressure from your opponents (they had no detection and you only used 2 tangos so far.) You then went all the way to bot rune, then started... pulling? I honestly wasn't sure what to make of this. BH
can gank at level 3 if needed but you don't have to do it, and both the other lanes were pushed so there were no good targets. You should have just stayed to farm top.
5. You mill about for even longer. Get the 6 min rune bot, immediately feed those illusions to Tinker rather than scouting, sort of half gank him but don't really do much ( I put this on Lina for not responding tho, you had the right idea.) By the time you finally come across Lifestealer and kill him (which if you wanted to roam should have been your first place to check anyway, he was clearly jungling and you know a Lifestealer is gonna be fairly low) 5 mins have passed since you left your lane and you are now the lowest level on your team. This can't happen on BH, unless you are playing it in a coordinated team where you are meant to threaten with your presence like Pie did for C9. But you aren't Pie, and this ain't C9. That non-traditional approach isn't an option here. You need track so you can start your team snowball, and you are being very slow about it. Overall that 5 mins made it you seem very aimless, like you didn't what you needed to do.
6. You are maxing Shadow Walk. Bad idea. You don't need the low cooldown that bad yet, and you have eliminated the possibility to double tap as I described earlier, reducing your dps, not to mention level 1 shuriken and jinada mean your killing potential is not good at all.
7. 10 mins. You now have level 6 and phase boots, albeit like 4 mins after you should. You have like 200 gold, and you buy a circlet rather than a tp. Don't do this. You don't want to walk all the way back to lane, a tp is a way better option here than the tiny amount of stats. You go top and try to kill OD with Lich. Surprise surprise, your lack of damage from your skill build means he kills you before dying.
8. You gank OD and LS again as 4/5 this time, get a 2 for 1 trade. Could have gone better, Bristle's fault for dying tho. You still don't buy a tp. BUY TPS. At least you are getting track gold now.
9. Plenty of track kills top, you now seem to be getting more into the groove of things. Still, your teams cs is way lower than theirs, so they still have better net worth despite all these track kills. Comeback on tho?
10. At 17 mins you find lifestealer again, but he's full health. You track him, good, but also throw a spite shuriken, bad. That's just wasting mana. Can't afford that on BH.
11. You arrive a little late for a fight but get pickoffs on the edge. Alright I guess.
From here it's pretty standard stuff. Both teams group a lot, you play defensively as OD is balling out of control, you track in fights, hit when you can, pretty normal BH play. Buying sentries is a good habit, honestly I don't have much to say about the mid and late game, it was very basic tactically. One thing tho. You keep your quelling blade, presumably for dewarding, right up to the end. But if you are with your ranged teammates so much (you were), it's not worth hanging on to. I'm honestly not sure if I saw you buy a tp once.
Not.
Even.
Once.
Buy tps. That's the biggest thing I can tell you from that game.
As for BH tho, I have to say, that was potentially the perfect game for that hero. You had the perfect lane partner if you couldn't solo in Lich, because he is an excellent babysitter and you still get good exp with him, and you were against two squishy int heroes with no sentries, and a jungle Lifestealer who was practically begging to be killed. Then you would be a terror for Tinker if you got a good start, and you are also excellent vs Drow. If you played the first 10 mins right their whole team would have been in constant fear of you, either having to group as 5 all the time or risk you solo killing them and snowballing out of control. You should have been getting far more last hits in lane (especially with a QB) and stayed till level 6, at which point you could have killed LS solo, then killed Sky solo, then killed OD, honestly anyone was kill-able with level 6 and phase boots in 6 mins. And go for jinada or Shuriken max first. Which one is a point of much debate here, but don't max shadow walk. A value second point at most, you need burst. Don't waste you mana, it's very important on BH. Hopefully in future with better starts you can see how to play him more aggressively, other than almost solely a track machine.
That's all for now, hope it helps.