Assuming you installed several months ago, do you feel this is a recent slowdown or was it there from the start?
Rebooting the phone doesn’t help?
What exactly does it say for you in Settings - About phone - Android version (tap on it) - /e/ version?
0.21-q just came out on the dev release channel, should be released on the stable release channel in a few days, if dev users don’t report severe problems.