Combine Quotes Slideshow and Automatic Slideshow

[Amzz]

Someone who perhaps could help me?🙏

I am a totally noob in all this CSS and JavaScript, and all i have managed to make is a quotes slideshow, thanks to W3schools How to do guide.😍
So my problem is that my quotes slideshow only works if i click to the next or previous pointer to see the quotes, so i thought if i example comebined the animation and automatic parts of the slideshow with pictures to my quotes slideshow, that it would become automatic and change the quotes them self.

But i can't get it to work. 😢So perhaps some genius in here, could tell me how to make my quotes change automatic?🙏