Clans that I would recommend are 101st and Warlighters (REGL is also alright, I think; I don't know much about BIA). They are pretty established and offer a good entry point if you want to become are better competitive player. They don't take anyone these days anymore though and your winning quotas indicate that you might still be not good enough to get into those clans.
I would play in 1 vs 1 in scenario maps or with local deployments. It is easy to lose your position on maps as Earth by Fizzer under normal settings for 1 vs 1.
I don't really get this statement with the "lose your position"-thing. That's part of the game, right? Scenario maps are pretty crappy, not much about (strategic) skill any more, but this is my opinion. And LD is a bore, most of the time. Few competitive players like playing it and it also doesn't play that much of a role in the competitive scene after all. So if you want to become a top-player, these two modes are exactly not the way to do it.
And, well, you are pretty big-mouthed. This statement with your understanding of the game being above-par ... well, your stats alone tell a whole other story. A bit more modesty would be appropiate - you have wayyy many more games to go to really know the game.
Anyways, good luck for finding a fitting clan!