I've been playing a lot of mcosu recently, it's actually better than the actual client in some aspects. Like you can skip small breaks that happen in the middle unlike regular osu. I really like that feature. They will hopefully add that in lazer.
I play McOsu mainly for FPOsu. It literally helps my aim with valorant. I use it as a warmup so I feel good dragging my mouse around my desk cause if I didn't warm up it's like my hands are having a seizure lmaoo