Pulled the trigger on the Sony Alpha A6100 - now what?

Hi! As someone that gets way too invested & obsessed with product research, I am very relieved to say I finally made a choice!

A little background: I'm a budget-minded traveler newly interested in photography. I'm headed on some fairly big trips this year which include New Zealand's South Island, gorilla trekking & safari in Uganda, and some time in Italy. I wanted something that would work well for both landscapes and wildlife. Highly considered a few different Olympus micro four third's but kept being pulled towards the Sony Alpha line.

As the title states, I ultimately landed on a used A6100 for $400 USD, shutter count just under 8k. Hopefully I did well there, but it was just the body. Now I come asking for advice on lenses! For my purposes (landscapes, nature, safari wildlife), what would you recommend? I'm a light "one-bag" traveler, so I don't want something too cumbersome to carry and/or store. Budget-friendly preferred.

(When I was deep in my Olympus research, I had decided on the Olympus M.Zuiko Digital ED 12-100mm f/4 IS PRO - anything comparable to that for the 6100?)

Thanks so much for any help!