You can do just fine in solo queue over the long term if you do two things
1)Get on the mic yourself and say hi, get everyone into the game and in chat together as best you can
2) stay positive
I would agree except every YouTuber who's been preaching that have had the worst Comp games this season in solo Q. Even Stylosa who's like the most positive dude made several videos recently ranting about how awful Comp has been for him. Like how some dudes literally threw the game by dancing through the entire match.