I was about to buy a new batch of proxies when someone told me to slow down and try a proxy server checker
https://proxyline.net/en/proxy-checker/ first. I honestly didn’t think it would matter that much. After running a quick check, the difference was obvious. Some proxies were solid, others clearly weren’t ready. That small test saved me from wasting money. The process felt easy and natural. Now I always check before committing.