You don't need any additional software for that, DaVinci Resolve is totally capable of doing that! You just need remember to take a clean plate for any section that you want to erase something out of, then layer the actual frame and clean plate on top of each other in Resolve, and then mask the upper layer to erase whatever you don't want out of the frame.
The basics are explained in this tutorial: https://youtu.be/ulDQ2JOMsdY?t=148
It's for a cloning effect, not for prop removal, but it's essentially the same process of layering to images and masking the top one. The node view in Fusion might be a little intimidating at first, but take it slow and maybe watch another tutorial on how that works if you're struggling, but it's absolutely worth learning!

If you need somewhere to start with just the nodes in general, maybe have a look at the first half of this tutorial, it explains what nodes are all about in a nice way: https://www.youtube.com/watch?v=PoinMs_YceQ