Brave DIY

Brave is the easiest option - most of the work is already done for you out of the box. Go to Settings > Privacy > Fingerprinting blocking and set it to Strict. Shields are on by default and block trackers. For WebRTC: Settings > Privacy > WebRTC IP handling policy > "Disable non-proxied UDP". For proxies install SwitchyOmega (Chrome extensions work in Brave). It also has a built-in Tor mode for separate windows. Turn off Brave Rewards and telemetry in settings. The simplest setup of all three - less flexibility than Firefox, but you get solid privacy with almost zero effort. But remember this is still not a full replacement for an anti-detect and if you have a lot of accounts, buy a subscription to the anti-detect you like.