I do a mix of both pro and just cause i love cameras and taking photo and video
I like shooting landscapes wildlife
I shoot for events also sometimes video some time photo what ever a client wants
I am asking for help not for you all too roast me at once
Well be fair, you haven't exactly given us a lot to work with so far..
For shooting wildlife something with high frames per second on an APS-C sensor will probably give you your best overall results. However a Nikon D500 won't be compatible with your current selection of Canon lenses and would not do as well at shooting events particularly indoors or in poor lighting as a full frame.
If you are shooting professionally and shooting events a full frame would probably be a better choice, especially if your shooting pro and you only have one camera body at the moment. In that case your best bet would be to get another Canon full frame assuming you already have a halfway decent lens collection for the Canon you already own, so if you are out shooting and something might happen to one body you have a spare. People who pay you to shoot don't want to hear about equipment failures, they expect results.
For shooting video it sort of depends on how "high end" you want your video to be, a Sony would probably give you the edge in the video department but it would most certainly not be the best choice for shooting wildlife. It would also not be a good choice if your shooting professionally unless your plan would be to get rid of your canon gear and get a second Sony body as well.
As it is you'd probably be best off narrowing down your priorities a bit and deciding whats most important to you first.