@WASTECH Honestly I am not aware of any cloud mesh VPN that offers more than 6 or so users on the free tier.

I think if you really do not want to spend money, your best bet is hosting something like headscale or netbird on your local and exposing it via a Tunnel like cloudflared or something similar.

Alt. you could pay for a very cheap VPS and host headscale or netbird on there but unsure how much data you intend on transmitting.