Trusted, reliable, and good proxy services can be found in this forum section: "Security Services".
How to work with proxies?
1. Select a residential proxy per-unit plan for speed testing.
2. Purchase a residential proxy that matches the cardholder's billing address.
3. Install the proxy in the anti-detect browser.
4. Check the IP address against blacklists and spam databases.
5. Go to the cardable site and make a successful hit.