Annoying Wi-Fi problems?

I have the following problem. I have my room in the basement and like to play online games like Fortnite, Fifa, Cod, etc… The problem I sometimes only have to fight with lags. The router is in the living room, one floor above me. LAN cable is unfortunately not possible because otherwise we have to drill a hole in the floor of the living room. I have most of the lags in the evening. We have a 150K line. There are 2 consoles connected (mine and from my brother) and 5 cell phones but that is definitely not because I play in the living room and have good internet connection

If you had some tips on what I could do, be it Wi-Fi repeaters etc.

A heartfelt thank you!

First check with the ping command whether the problem already occurs in the home network or is a problem of your provider.

A high latency can occur, for example, when the WLAN is busy. This does not have to have anything to do with the provider

Ps

If you have a fritzbox activate the auto channel search then the box switches to a channel that is not used by your neighbors

Since the Devolo network helps you, you can buy the Devolos 1200 etc. You have to put one in the socket and plug the power plug from the router into the Devolo next to the Devolo nothing else may occur otherwise problems occur and also connect the other one with the Lan cable plug your room and then connect the two Devolos at the push of a button or you can simply get a mega strong Wi-Fi repeater and connect it to the router if you have any further questions, please get in touch at any time.