I always debloat my phone, the difference is too massive to ignore.

My last 2 phones were a Galaxy S9 and a Galaxy S10, and I really found the samsungs to be insufferable at first, but with a strong debloat removing a bunch of 'features' nobody asked for and redundant apps, as well as changing the launcher (I use novalauncher, but rootless is also great and also FOSS) had a notable effect on the feel of the phone. I recall that some of the "features" specifically slow down responsiveness to button pushes because for example it ends up waiting on a home button press to see if you're going to do a double or triple press.

If you mess it up too much, a factory restore will undo everything you did anyway, so don't worry too much about it.

I've used the same technique on a number of different phones as well. My dad loves his LG phones, but it comes with a bunch of stuff he didn't want, so we were able to disable it. His latest phones are rugged china phones, and he swears by them, especially once we were able to get rid of a bunch of stuff they added that you really don't need.