The Ruy Lopez is an opening which can take a life time to Master!
And a lot of Chess Masters did spend there whole life playing and Mastering it!
My recommendation is to study the Ruy Lopez section by section till you reach a position which you think is manageable.
Also, Ask for help or get advice on parts you’re confused about!
I want to not only learn the Ruy Lopez like at beginner level but that i have a great understanding of the Opening. Any suggestions? Books, youtubers, etc..