Proxies getting blocked

Hi,

My proxies are getting blocked really fast.

I purchased 5 dedicated proxies.
Want to run a simple query: keyword inurl:abc.

When I run that, it works just two or three times, then all of my proxies are blocked.
They replaced my proxies for new ones two times and it happened the same thing.

Why is it that my proxies are getting banned so fast?

I see youtube videos where loopline uses many more search operators with several queries running in the same harvesting session and it works.
Not understanding why in my case it doesn’t.

If there’s anything such as high quality proxies and low quality ones, let me know where can I buy the good ones.

thanks