TLDR, my school installed Fortinet on the school wifi and blocked basically everything, including important stuff like WhatsApp, I found a vpn that works on mobile, but cant find any for laptop, not planning to do anything bad with it, js gonna use yt
Go to system bios and disable the administrator option, then go to security and put a password on bios. If your school catches you they have to install new windows to get into the system.