First of all, if you want to get into Linux, DO IT! It’s truly awesome, I love it. Just get Mint, throw a Windows skin over it and nobody will notice, trust me. Honestly, it’s incredibly rewarding.
When it comes to browsers, I now have the best setup I could think of: LibreWolf. It’s a hardened version of Firefox. It doesn’t use TOR and all websites are accesible. I use Startpage as a search engine. Granted, it can be a bit slow but it gets great results and there is a button that lets you open websites via a Startpage proxy. LibreWolf by default erases all browser data on exit so for logins I use KeePassXC password manager. It has an awesome addon which automatically fills in login fields, it can do TOTP and autofill that, too. It’s pretty great.