Is there any IP Proxy Pool recommended?

[hydeCaesar]

I added

    transport := &http.Transport{
        Proxy: http.ProxyURL(proxyURL),
    }

    client := &http.Client{
        Transport: transport,
    }

trying to use an IP Proxy Pool to break through rate limits from OpenAI . It got an "IP blocked". Is there any other solution or I just need to buy an another IP Proxy Pool ?