I often use Opera browser's free proxy they offer for basic browsing or blocked sites. They advertise it as a free VPN but it's merely a proxy. As far as I know, it's unlimited traffic and you can choose the region it connects to.

Edge also has some Microsoft VPN with a very small amount of bandwidth for the free tier.

I'm fine with this kind of stuff as long as people are aware it doesn't offer the same connectivity as a full paid VPN.