How to understand youth slang?

Hello everyone, I want to know how I should understand youth slang? I feel quite old. After all, walking past the campaign of young guys, I don’t even understand what they are talking about.

Hello, don’t bother, I also didn’t understand my son for a long time, his slang was quite difficult for me and then I realized that I needed to look for a way out, I came across the site https://slang.parentaler.com/slang/tuff-meaning/ on which I found a large number of transcripts of various words of youth slang.