TP-Link Powerline Wi-Fi 6 Extender TL-WPA7817 KIT - Includes AV1000 Powerline Ethernet Network Adapter & AX1500 Dual-Band Wi-Fi Extender, Gigabit Port, EasyMesh,Plug, Pair, & Play, Free Expert Support

Even if you have great wifi just having other wifi networks around makes yours slower. the best thing you can do is run an ethernet cable if you cant there are powerline adapters that use the electrical wiring in your house as an ethernet cable.