I just cant get on with Firefox anymore, it used to be my chosen browser but it feels bloated, clunky and slow, maybe its just me, Edge Chromium all the way.
I had most of my crashes on FF, ever since I changed to Chromium based browser no more crashes, in the old days of Firefox you had to disable hardware acceleration, took them ages to fix that.
End of the day you have to decide what's the highest priority on your list ie stability, customisation, support, privacy etc ....