Nobody really discusses APSc sensors as anything other than useful for nature shots and no one really talks about how to overcome the disadvantages of a crop sensor.
Dont buy older Canons with older sensors
/processor combos, professionals with lots of trigger time can overcome the shortcomings of the equipment but you likely can't.
I just bought a 90D and Im really happy with it, its crop sensor but high res with a newer processor, and it offers 4k vid, 120fps HD slow-mo, swivel touch screen, and most importantly weatherproofing.
Its the best value for your buck before you switch to full frames, and when you do that you should go directly to an R or (preferably) an R5.
then you need to focus of unfucking your lens situation.
Remember to do the proper sensor math. That 50/1.4 is actually an 80/2.2 on a crop sensor.
The solution is to buy wider lenses with the fastest aperture you can. This solution will work on you T7i as well as if you go to another crop sensor camera
You also need to consider Image Stabilization, especially for handheld stuff at any distance, like urban decay or landscape shooting.
Unfortunately Canon is a pain in the ass in this regard. Almost nkne of their cameras have in body IS and only some of their lenses do, the GOOD lenses that do normally have an F stop no faster than a 4, and their shittier lenses that have IS are all plastic body kit lenses.
they do make a few good lenses with fast apertures and IS though, and the Sigma Art series has a few as well
I would sell that 50mm and 10-18mm and buy a EF 35mm F2 IS USM ($600) (50mm equiv on crop sensor) and consider getting the EF 16-35 F4 "L" IS USM ($1100)
That'll give you some nice wider angle stuff in a more useable lens with less distortion than the 10-18 and image stabilization for hand held work (like street work) and a 50mm equivalent for portraits