Well, once you can afford a USB drive, which is cheap, I would recommend you moving any files you need onto that USB drive and doing a fresh instal of windows. You can Google windows (whatever version) factory reset and that will give you what steps you need.

At your current level, I don’t think people are gonna be able to walk you through how to fix something like that, its malware and could be sending anything you do on your computer anywhere. It is almost definitely sending something somewhere.

I would wipe and reload if I were you. If it was mine I might try to figure it out, maybe Revo uninstall or such. but simplist to put any files you need in a usb drive and do a full reset deleting all of the files.