2 different approach.
- a proxy/network with low users (too low to be flagged)
- a proxy/network with high volume of users (large enough that they consider it not worth blocking because it means they will block a large portion of their userbase or services that use that gateway.
method 1.
have you tried services that offer to residential proxy? (not sure how legit these services are though ie i think alot of them have been obtained by unethical or unauthorized methods).
method 2.
vpn from big tech like cloudflare warp or apple relay
i mentioned this in another post for yt:
how about double hopping/chaining 2 vpn?
use cloudflare warp or apple relay which unlikely to be blocked by yt.
eg you connect to trusted vpn > trusted vpn connects to cloudflare warp > cloudflare warp connects to yt
would that setup work?