@Sunshine i know, my problem is that the router automatically assigns only 2.4ghz, it never assigned 5ghz, i know i cannot set it manually, therefore i want to fix this issue EDIT: and manually...

So i have an problem with my router, that anything that i connect, connects to 2.4ghz, my gaming pc, my phone, my other phone, and my family's devices, all connect to 2.4ghz when they are very close...