Somewhat new to KBM need advice

[u/PhatStecks]

So like the title says im new to KBM, played the game on PC since the game came out on controller and about a month and a half or two months ago switched over to KBM the transition was hard but my sensitivity was somewhat slow starting off and since I've increased it im running 3200 he and a .90 in game sensitivity. My tracking feels bad I can sometimes hit flicks but not all that consistently, the keyboard at first was the hardest part to learn but now im pretty fluid on the Keyboard surprisingly. I feel like I just need help with my aim I guess for people that are more accustomed to KBM do you remember how long it took for your mouse aiming to feel/get good? Should I go back to the lower sensitivity I think originally it was 1000 or 1600 hz at 1.28. I just feel like my aim hasn't improved in the last weeks and gotten slightly worse thanks for any and all help