They should make a "recording mode" that you can turn on. When you speak to an NPC, you can turn on "record mode" and speak out the npc's words. Then it will save these voice files and you can share it with the community.

There you go problem solved.

If Larian can't afford voice actors, at least put a built in record feature that lets players record the voice acting themselves then just upload it and share it with other players.

There are about ten different, clever ways to fix the issue of "no voice acting", but Larian doesn't have the innovation to figure out such a simple god damn problem. You know why? Because they're stuck in the past.