It's all a matter of practice. I play on a tablet most of the time.
I recently installed genshin on my potato 4th gen i5 laptop and to my surprise it runs smooth at low on the HD screen.
I installed to try out aiming.
It was harder for me to switch fast. I actually liked the tablet game play more. The movement control also felt weird.
The main advantage I liked that not accidentally using bursts.
The controls on mobile are not too bad. It's a matter of phone size and phone power.
My phone is a midrange one. I only play genshin on that I am outside and need to get commissions done or use resin, and it's not bad.
My phone lags after like 10 mins due to overheat and is choppy but I think I could play properly if I had like a high end phone.
I only started playing 2 months ago. I wish I discovered this awesome game earlier.