GL-XE3000 mesh solution

Hi, I'm currently using GL-XE3000 (Puli AX) with cellular 5G via smarty (utilising 3 network) in UK. My house isn't very wifi friendly, so was wondering if any mesh wifi solutions or alternatives that could be recommended. (I've tried wifi extenders but they're not that great).

thanks.

I’m using a tenda nova mw6 3x to reach all the rooms in our flat.
The main one is connected in bridge mode to the GL-X3000 on the LAN port per cable
The wifi speed on the nova is not that great as direct on the main device
But it is OK for everything