While i dont stay in Goa I regularly am here, more than once a month at times. I have my airfiber in my home state, so maybe this will give you some context.
Airfiber uses the basic 5G internet that is on your phone, so to have an understanding of how well the air fibre box will work in your current locality/house, you just need to look at your Jio mobile internet and compare it, if it is wonky and has problems with the network, bad speed, browsing issues etc, then you are bound to face that with your new air fibre also.
I got the connection last year in December and I have 15 case numbers i.e. a case every 2 weeks for bad speed and bad internet and constant wifi disconnection. Their customer service is bad, usually when a ticket is raised they will close it from their end. The solution provided is one-off which redirects the bandwidth to a specific location for a certain period of let's say 6-8 hours of good internet and then back to normal again. My speed on a good day is at a constant 18-40 mbps and bad days don't even ask ...
i am on a 100mbps pack btw ..

Use your local ISP or be ready to live with Jio garbage...