The TP-Link Deco XE75 mesh Wi-Fi system by Netgear is reasonably priced, incredibly capable, and futureproof. A single router can cover up to 2,900 square feet of space with up-to-date Wi-Fi 6E connectivity. You can expand the coverage by adding more satellites without breaking the bank.
The mesh Wi-Fi system can accommodate up to 200 connected devices. You can control it via an intuitive mobile app.