What does "blend in" mean? If I say "I wanna just blend in", does it make sense?
"Blend in" here refers to someone presenting themselves in a way that makes them look like they belong to a certain group, for example someone styling their clothing, hair, etc. to look similar to the people they work with or go to school with. "I just wanna blend in" is acceptable to say ("just" and "wanna" are usually reversed from your original sentence).