If you do a search on "slang dictionary", you will find lots of them.

Student or Learner
Let me ask you, if it is possible this kind of petition, for Slang DIctionaries both on line and in paper that could be really good and useful.
Thanks a lot. I'm really concerned with all the different slang sentences that can be heard.![]()
If you do a search on "slang dictionary", you will find lots of them.
As a members of UsingEnglish.com, you have access to our slang and idioms database: https://www.usingenglish.com/members/idioms/ (and other goodies)
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I'm not a teacher, so please consider any advice I give in that context.
A good dictionary is the Bloomsbury Dictionary of Contemporary Slang by Tony Thorne.
thanks