Hi, if anyone has this problem today, I solve this with an IPv4 change.
The issues I had were:
Constantly checking almost every page open with “Cloudflare security check”.
Don’t load too many video players from anime pages or cuevana.
Don’t load images previews or pages just like text.
Some game launchers can’t connect to log in.
The only way to solve this for me, was request to my Internet provider a change of my public IP, they answer me: can’t change the “real public IP” because they use NAT, which is a method to create new public IPs, using ur private IP, so I wrote, it’s okay, just change it, please. They have done it, and all the issues were solved.