How to make hands independent

[sumpianodude]

I can't play 16 th notes on one hand and trill on the other, nor can I play triplets over eight/sixteenth notes, sometimes when both hands are playing different sixteenth notes in different pattern they mess each other up.
How can I fix this? Any way to practice that would help?
Anything would be appreciated

[kawai_cs]

So you want to learn to play polyrhythms. Maybe this will help you:
https://www.key-notes.com/how-to-practice-polyrhythms.html

I find this website very helpful - lots of good tips.