I'm thinking about banning out my own team mates now. Should I?

Why? Because every game I lost today has been shit like Cho'Gath anything and two Lee Sin tops. In ranked. On my team. Then I get to lose all these games no matter what I do because THEY ALL FED. I'm so sick of it. If I'm the only one that's going to use foresight on my team, I'm halfway thinking on using it to better my own team comps simply because no one else will. If that means banning out some piece of shit playing Teemo adc (had that too, lost again), I'm nearly willing to. Only issue is that I don't want to get trolled over banning out something that'll OBVIOUSLY make me lose anyway.

So what the hell do I do? Do I start banning my own team out now? Instead of using my bans on things I don't want to fight against, should I now start using my bans on things I don't want to see on my own team? I'm seriously sick of losing because of other people doing shit like this. No support main is going to win a game with a 3/13 Lee or a whatever the fuck my Cho was. I think it was like 2/16 or some shit like that.