No, very few wireless cards support hardware access point (hostap) mode. Intel, mediatek cards don't, iirc very few atheros cards do. That make most consumer wifi cards a pretty bad wireless access point. I am using a dedicated wireless access point TP link EAP670.
For airtel, I have a static ip, which does not require a pppoe authentication. I just enter the provided static IP and gateway on pfsense interface config, and that's it. The airtel router needs to be on bridge mode, with pppoe configs removed.
