I trust Mullvad and Proton at this point for VPNs, nobody else.
Any reason you can state not to use AirVPN? I switched to them from Mullvad because they support port forwarding. So far I've been very happy with their service.
Having ads and sponsors blocked I can't be 100% sure, but I don't think they advertise at all. I only tried them because of a recommendation on Lemmy. Their site design is very old school which really says "run by nerds and not marketers" to me.