I too was experiencing this. It was laughably bad. I then disabled 5G and all my issues disappeared. 4G is plenty fast enough and in my area has far better coverage. I truly don't see the point of 5G and the toll it takes on my battery.
For sure, and every network upgrade has been like this in the beginning, but this time it’s been a long time and 5G just isn’t better in anyway. On my personal phone it would cost me $40 more to upgrade the family plan to 5G so there’s no point.