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'm a wallet user on Desktop Wallet, and I also use Metamask Wallet so far I haven't had a problem with this, it depends on how you use your browser, and here I use Chrome for browser security. You also have to be careful when opening social media. like Facebook, Youtube or other media because they are very aggressive in finding and tracking people's activities in doing things online, and you should never share your activities.
With this they will not be able to hack or steal your assets. and in my waleet browser I also store most of my assets in mobile wallets such as Trust Wallet and Tokocrypto to avoid this because mobile waleet also has very accurate security, and all assets you store can be guaranteed. if you say you have bought Bitdefender Antivirus that is also good, and can treat your computer or laptop well and have good security.