Here's how I gave my slow gigabit speeds a jump ... Ethernet offers a wired connection through cables, which you can plug directly into the router, and should provide faster speeds than Wi-Fi.
Luckily, a modern router can fix a lot of these ... these TP-Link Deco X20s support wired ethernet backhaul, and with a 2.5 Gigabit ethernet port, you can keep your Wi-Fi speeds pretty fast.
One Gigabit WAN port and four Gigabit LAN ports let you set up multiple wired connections. If just one router isn't doing the job, it might be time to upgrade to a mesh system. These standalone ...