I checked out your game, and that's pretty cool, and great job if youtubers like Jack have played it! If you're looking for a VHS video effect (?) check out VHS Pro on the Asset Store, but I heard it doesn't yet have Unity 2019.1 support or URP support. PSXEffects, though, works great in recent Unity versions. You can use it to get affine textures, vertex snapping, lower resolulutions, bit crushing, etc. for a PS1 look. Combine that with using none/point filtering on textures in Unity, and it looks awesome. I'm not sure which plugins Puppet Combo uses, but those are similar.