router suggestion for jio fiber

i have jio fiber connection and their router sucks and i dont get full speed too sometimes even when i m not that far away from router.very unstable speed i get due to not full signal strength of jio router.although i m very sure its their router problem which they are giving.anyone plzz suggest me a good router to connect to jio fiber.i live in 3bhk flat.

if you are talking about wifi range issue then sure that will be fixed with a repeater put on AP mode. I use Mi router 3G v1 with openwrt.

i m also talking about its signal strength issues as even if i am some distance away from router signal flactuates.i dont get full signal

Can't help it :/ with walls, just get a repeater

If you have money get Mesh WiFi: https://www.amazon.in/TP-Link-M4-AC1200-System-3-Pack/dp/B07KJ2TDMR

You can setup another router as AP in the room with low WiFi: https://www.amazon.in/TP-Link-Archer-C6-Wireless-MU-MIMO/dp/B07GVR9TG7

Avoid using repeaters, it halves your bandwidth and clogs up WiFi even more.