Can't speak on a Sony as I'm Canon through and through. I have a Canon EOS Rebel t7 with a 75-300MM and am 18-55mm lens. The video is only 1080p but that is plenty good for me as videos display just fine on my 55 inch LG 4K HDTV. I got hooked on Canon when I used to sell photos on-line. Canon cameras and printers are designed to work together
At times I've looked at Sony and Nikon but got turned off by the price difference. Sony charges to much for just about anything they sell and the same with Nikon from what I've seen. It is like you are paying an extra $100.00 USD just for the name.
Another problem that I found with Nikon is that it is too often that changing from one Nikon body to another too often makes any lens you already have useless as many camera bodies have different lens mounts. With Canon a lens is usually portable between camera bodies.
Don't get me wrong as both Nikon and Sony have good reputations with Nikon probably having the edge on still images and Sony probably having the edge on video. Also it must be understood that what I've said about Nikon and Sony are strictly taken from reviews and research, not personal experience so may not be all that accurate.
My first DSLR camera was a little 3.1 megapixel Olympus point and shoot that also did video ( think 720) but no audio. Kicked my own backside several times for not paying a little more and getting audio. If I were ever to turn away from Canon I would very likely go Olympus or, at least give them a serious look.
One thing to keep in mind with DSLR is the miss information as to megapixels. Megapixels have absolutely no bearing on image quality. Image quality is controlled mostly by by the sensor and the lens which is why a phone can't match a dedicated camera as the phone just can't match a good DSLR lens. What megapixels actually control is how large you can print a clean image.
As an example of image quality the following was taken with my little 3.1 megapixel Olympus. Nice photos but restricted as to print size by the low 3.1 megapixels. Pretty much the largest clean print is 14x11 inches. With my Canon Rebel T7 at 24 megapixels I could easily print wall posters.
Including the two following just as they were taken with that little 3.2 megapixel Olympus point and shoot. Either, even with the low megapixel will print perfect 14x11 prints due to to the optics. Click the images for full size.