Connecting Second Router in Another Room: Optical Fiber, Wireless Network, Huawei B315

Hello. Well, I have a problem. I have an optical fiber and a wireless network at home. I have an internet socket in another room and a PC against the wall. Sometimes he likes to be disconnected by household members, but that's another story. Is it possible to connect a second router in the other room next to the computer, so that it is not disconnected, etc.?
If not, whether there can be, for example, 2 internet networks in the house, i.e. a can of internet in 1 room and a can of internet in the other room. I'm counting on your help. The router I have in that room is Huawei, I don't know the exact model. Huawei B315 is this router

It is best to extend your network by wire using the electricity network. A set of the simplest adapters to buy for PLN 70.

@dedito

How does it look more or less? Because I will not say, I would prefer to have internet also on my phone.

You put the plc adapter into one electrical outlet and plug the cable from the modem / router with optical fiber into it. You put the second adapter into the socket in the second room and connect it with a wire to the second router. Both electrical outlets should be on the same phase.

I solved the problem, the supplier came and transferred the router to me