Help with frontend forms

Hello
today I would make your help again. I would like to create two front-end forms, once a normal contact form that I can extend fields, but also a front-end form, which can store the data in the backend of Kirby cms, if possible. Unfortunately, I have no idea how I do it and would therefore help.
Greeting Tom

Basic example contact form: https://gist.github.com/bastianallgeier/c396df7923848912393d

I can recommend the Uniform plugin, the documentation comes with an example as well.

And here an example for creating content from frontend: https://getkirby.com/docs/cookbook/creating-pages-from-frontend

Other than that, your question is very broad, so if you have more specific questions, feel free to come back with them.

Did these links help you get started?