Can vpn be used to target a different region audience?

Lets say on instagram as example when you post reels yoy will get views based in where you are posting from
Im wondering if i got to use vpn before posting will it change the reagion of the viewers?

Probably not to the degree that you’re thinking. First off, unless you use a private IP, Facebook probably knows you’re using a vpn. Second, unless your content is specifically geared towards that audience, it probably won’t reach them anyways

Does anyone if using a VPN has any impact on TikTok traffic you get?

As far as I know, Meta blocks VPNs for this being one of the reason

A VPN might change your IP location, but Instagram also considers other factors like your account history, interactions, and SIM card location. It might help a little, but it’s not a guaranteed way to target a different region.