New body

Recently went to an event with my wife (she’s an equestrian) and my m50 which I bought a few years ago just crapped out. Looking to upgrade now that I have the chance. Any body recommendations for a hobbiest who mostly uses it for wildlife, portraits, and nature shots?

Lenses: sigma 100-400 f/5-6.3 EF mount Canon EF-M 32mm F/1.4 STM

Looking for something I can get used or new for under $1,000