How Do I Configure Proxy Server Settings in Chrome for Better Privacy? or What’s the Best Way to Set

OP reply:
Whoa, thanks for all the tips! Tried the chrome://net-internals trick and it kinda worked? But now my proxy’s super slow.

Anyone know why that’d happen? Also, is there a way to test if the proxy server settings chrome are actually secure?

(And yeah, extensions seem sketch—sticking to manual now.)