I'm going to give you some for real advice.
This is a game. Games are meant to be enjoyed. Do not take this hobby too seriously. You don't make enough money in FGC to make a living playing this game so don't rage if your character is low tier.
But also, if using a top tier Kenshi is what you enjoy, so be it. But he, by no means, is Joker tier. Hell, you may find the tech that puts him as a top character.
The point is, just cuz your character isn't top 5 or so this early in the game's life doesn't mean it's time to give up. If you're a true MK fan, you'll just be happy to play the newest installment of a game that we all have enjoyed since we were little.