1. These apps will not be removed from the play store but will not be available for users with Indian IP.
2. Yes because their servers will be blocked for Indian users
3. Definitely a VPN will work because that is the main use of it. There are lots of VPN in the market which includes but I would suggest you go for the renown one's line NordVPN, ExpressVPN, SurfShark, and PureVPN.