There are very few free VPNs that are actual VPNs. So your options are very limited. Here's a few:
https://riseup.net/en/vpn
https://windscribe.com/
https://one.one.one.one/
https://protonvpn.com/
https://privadovpn.com/
https://bitmask.net/
RiseUp is best as to not trigger antiproxy/vpn but...
I'm debating whether or not I should get Vape Lite for Lunar Client or Badlion, I've seen other users inject into both just fine, but it always runs in compatibility mode. What're they doing wrong? I want to be able to inject Lite just fine.
Title says it all, I'm using Forge 1.8.9 with Optifine. VapeV4 doesn't want to inject. If I play on a normal Forge version in Minecraft. Then it injects just as it's supposed to.