Best shoes for Bush walking: Okovango Delta and Zimbabwe

Hi there!

I am going on a trip to Southern Africa (South Africa, Botswana and Zimbabwe) and there will be lots of bush walking, hikes etc. I was hoping to get some good recommendations for shoes that could handle those situations and that wouldn’t break the bank. I have to travel light, it’s a camping expedition. So more shoe style instead of boots.
Any suggestions would be much appreciated!