Why do I play ranked at a specific time where I know I'm going to lose? (rant)

Seriously, I've done this routine since season 6, play ONLY two ranked games and if the first one is a loss just stop all together for the day.

I have so many people tell me "you should keep playing" yet why? It never goes well and usually when I get a loss it turns into a losing streak like what happened when I wanted to see what I would be placed in last season (I played 6 ranked games in a row and they were all losses). People don't understand my mindset, I am only positive and confident in ranked for only TWO GAMES, once the third one happens, I'm already exhausted, I can't CS correctly, it's boring, and I just need a break.

It doesn't even have to be two games, it's sometimes ZERO, sometimes I don't WANT to play ranked because I'm not in the mood which also dictates whether I'm going to lose. I just lost a game where my laner split push all game my team was amazing and I was just trash, and we had next to no objective control, nobody got turrets, and I couldn't team fight with practically 67 cs at 20 minutes, how are you even suppose to farm when you can't.

Edit: I was also 3 man tower dove at level 4, like, how was I suppose to avoid that.