i have been doing photography for only a little while now (about 3-4 years),

i'm looking to buy either a better camera or lens,

currently using my D3100 with the kit lens 18-55mm 3.5-5.6,

so if i should get a lens what lens should i get?

if i should get a new body what body should i get?

looking to spend around 500-800 for either.

for around that mark in bodys i can get

d7200,d7500(if i get lucky),d610

i don't know to much about lenses and there isn't that big of a 2nd hand market for them where im from.

i mostly photography landscape or wildlife.

Tl;dr,
do i get new lens or body?

Photo: my friends cat.