Firefox ? Chrome ? Brave ?
Kinda worried because all of them try to collect information about your activities online. I've purchased BitDefender AntiVirus, and taken some other precautions but... can never be too careful as they say.
I think all 3 browsers are the same as they all use chromium kernel. They have only slight publisher difference and brave will prevail if OP is looking for a browser for privacy and crypto related.
When you use extensions like metamask or software wallet, there is no guarantee of your safety. The only way is to use it only on dedicated computers to perform crypto-related operations, not to visit strange links, and not to install pirated or cracked software.