What's the best browser in browser proxy for secure and private browsing? or How reliable is a browse

Browser in browser proxies *can* work, but they’re not foolproof. A lot of them are just reselling your data while pretending to protect it.

If you’re serious about privacy, stick to VPNs + hardened Firefox. Or just use Tor and call it a day.

Sites like privacytools.io have good comparisons if you wanna dig deeper.