Others have already suggested that your best bet is access points connected by copper.
Ethernet is the most obvious choice, but it might be a lot of hassle to run Ethernet through the walls or attic or basement and add outlets everywhere you need them.
If you don't mind visible cables, running along the top of walls can work. Here's part of the Ethernet cable that is connecting opposite ends of my house and also speaker cable for on of my rear channels [1]. Ugly, but since when I'm indoors I look down a lot more than I look up, I'm fine with it.
Powerline networking has also been mentioned.
One more alternative to consider is MoCA [2], which is an option if your house is wired for cable TV. The easiest way to think of MoCA is that it is like powerline networking except instead of running Ethernet over your power lines, it runs Ethernet over your cable TV lines. A typical MoCA adapter has two coax ports and one Ethernet port.
You hook up one MoCA adapter at your cable modem between the modem and the wall using the two coax ports on the adapter, and hook up the adapter's Ethernet port to an Ethernet port on the modem. (If you don't have cable internet, same instructions except you only need one of the coax ports on the adapter, and the Ethernet port gets hooked up to your DSL or fiber or Starlink or whatever modem).
Then anywhere else in the house that you want Ethernet and have a coax outlet you hook up another MoCA adapter to the outlet via one of the coax ports on the adapter. The MoCA adapters do their magic, and that Ethernet port is logically on the same Ethernet as your cable modem. You can use the other coax port on that adapter to hook up another coax device, like a cable TV box.
[1] https://imgur.com/gallery/uZ0VvtM
[2] https://en.wikipedia.org/wiki/Multimedia_over_Coax_Alliance
