I'd consider/suggest the SL2 (same sensor as the SL3) with the ef-s 10-18mm IS STM, especially for video. the ef-s 10-22mm is the crop equiv. of the traditional FF 16-35mm - but I'm told the newer STM lens is preferable for video. Note that there are two other canon zooms that are similar in style, features and performance to the ef-s 10-18mm - the 18-55mm and the 55-200mm - both in the IS STM versions. all stabilized, well performing (decent IQ), light and affordable glass, easy on the budget.
While the new SL3 extends the 4K options it does not offer 1080p at 24 fps. Only God and Canon know why. Similarly, Canon has also omitted the center pin on the hot shoe - making many 3rd party and older flashes incompatible - 'though I just heard that Godox announced a workaround - details unknown. Otherwise, the faster processor extends battery life and overall speed performance - although with an oddly restricted feature set. go figure & enjoy.