Please how do you suggest I set up slideshows that show each slide for a few seconds and then slide over to the next slide automatically?

Started my account a few days ago. And got over paralysis analysis to actually put up a slideshow-type video

(Was surprised to see how easy it was to do! All from my smartphone)

Even though the video quickly got 755 views, still need help with making a better video next time

Noticed that the slideshow video needs people to flick to see the next slide.

Pls how can I automate the changing of each slide to the next slide?

Thanks for your help

P.S. Would have shared my account but want to stay within the "no self-promotion" rules.