I kept Internet Explorer which I had for years but I only use it to check my email, and all my old Favorites (Bookmarks) are still listed on that browser. But mostly I use Mozilla Firefox and have been happy with it, no problems.
They were pushing for me to use Edge when I bought my last computer that came with Windows 10, but I didn't care for it. I'm not comfortable using any google product either, although I do use it for my general search engine.
The latest version of Firefox caused me some problems, so I switched to Opera. I really like it.
Don
Mostly Firefox, sometimes Chrome and rarely Explorer. All our computers (my desktop and laptop and hubby's desktop and laptop) have Windows 7. I dread the day when we have to move to 10 (or will it be 11 by then) because I fear some of my business software will be incompatible.