Hello @thomas80559 … thanks for watching my early tutorial videos.
The tutorial you followed only has 1 search element. I have a tutorial site I have that shows one example of a multi search by using multiple elements that you can try.
As @givemeawhisky recommends, do no try to combine codes on your first try. Create them both separately to understand how they work and then try to combine them together.
The only wrong way to create a search function is when it doesn’t work. Since there are many ways of creating search functions there is no ‘right’ or ‘one way’ of developing them. Go with the one that makes most sense to you.
I hope this tutorial site works for you ( I apologize in advance, but there is no video for this site):
https://codequeen.wixsite.com/multi-search
If none of the above works for you, I offer private tutoring services to teach you step by step in creating whatever code functions you need. www.mycodequeen.com
Good luck on your project!