Maybe check out the Asus TUF-ax4200 gaming modem/router?
Just bought one and it's been an awesome upgrade to my old AC modem/router. Wifi6/AX, 4 core, good ram, 1x 2.5GbE WAN and 4x1GbE LAN. Has USB to take a mobile SIM for dual WAN/failover. ASUSs software is very good, but it is on the support list for openwrt once Asus stop supporting it.