Hi there 👋
Try wipe cache partition of your phone.
Also few other things to try:
Go to settings > apps > 3 vertical dots on the corner > special access > notification access > toggle off one ui home
Also do you have a lots of widgets, filter effects, launchers etc on you homescreen? If so try to keep it simple and remove few of them, or any launches.
Clear cache and data from one ui home in apps settings.
Check if there's any updates, and if there's any update.