Unfortunately, 5E's class features and feats are very combat focused. Combine this with the fact that many of the abilities that are useful outside of combat in the ttrpg don't have the flexibility to be used like that in a video game and you reach a point where the only meaningful choices you can make are barely, if ever, related to the mechanical aspects of the character you create. The most mechanics come into play is with ability checks and the occasional revealed dialogue option.

TLDR: whether you help the deep gnomes rebel against their duregar slavers or help those slavers crack the whip is not meaningly changed if you're playing a half elf ranger as opposed to a dwarf fighter or whatever.