Are you stopping and taking a break if you lose two in a row?
EDIT: If you're constantly hitting losing streaks, it's on you not Supercell. It'll happen for a day or two, but often when I realize I'm on it I have gotten on tilt. I pre-play shit, don't think out what I'm doing, overcommit to pushes that are already dying, etc. Patience is a virtue in this game, both in leveling your towers/cards and in actually playing.
EDITx2: You also have to realize running RG + Sparky is super feast or famine. Just by virtue of relying on such a heavy deck you're gonna see more swings than most simply depending on whether a person can handle Sparky or not. If you want something more reliable, you gotta go Giant + Sparky or go all-in with RG like we've told you ad nauseam.