2.2k faceit player struggling with huge inconsistency

I’m hovering around 2.2-2.4k elo player and I’ve been struggling a lot with inconsistency lately. Some days I feel like everything is super easy, and other days I can barely get anything going.

For example, I’ll have days where I play 3-4 games and I can’t even reach 10 kills in any of them. Then other days I’m dropping 20+ every game and winning most of my duels.

Recently I had a pretty bad period where I dropped around 300 elo and my average kills were around 12. I decided to slightly increase my sensitivity and after that I climbed the elo back and my average went up to around 21 kills per game.

But now things feel weird again. I’m losing like 80% of my duels, constantly doing 90 in 4, and ending games with like 15 assists because I can’t finish the spray and actually kill the enemy. My average kills are dropping again (close to 12 now)

It feels like mechanically I’m doing something wrong but I can’t really figure out what. Some days my aim just feels completely off and I lose fights I normally win.

Do you guys have any advice on how to become more consistentl? Is this more of a mental thing or something with settings/sensitivity?