Another thought, you might NOT necessarily change your router….
Just stick to whatever you have with whichever hardware from whichever provider.
At your entry point is at least a UTP cable that will allow access the internet.
What about using this cable to set up a mesh network? In my experience at our home, but also what I heard from others, no WiFi problems occurred any longer.
FYI, in our specific case @home in Germany, I did change the router to a model by AVM/Fritz Box, since this brand is the consumer golden standard in Germany. Not top of the bill, but OKish for households like ours. Perfect reception with 3 access points, didn’t bother yet to put the 4th one in the network. 4 person household with Netflix, Tidal and Spotify all running at the same time without any dropouts.
PS: I suggested the mesh network as add-on, so you have the possibility to change provider and access technology (cable, xDSL, 4G and future 5G) without the need to re-invest in your own infrastructure.