MBAM Question

I am considering getting a rehabbed Dell desktop pretty soon, the little backup computer I have now runs very slowly when browsing in Firefox...seems like both programs are memory hogs...or it might be something else. I assume the rehabbed computer will have Windows 11 which I believe comes with Edge, and I could dispense with Firefox. Will MBAM live happily with Edge, or does anyone have that combination. Any advice much appreciated