Angel numbers give us signs/ advice (from the universe). Depending on the different numbers it depends on the meaning and advice. If you see an angel number is mostly means that you are headed in the right direction and to carry on and to not give up.
Here are the numbers...
Repeating numbers eg 1212, 111 etc
Number sequences eg 1234, 321 etc
Combinations of 2 and 6
Combinations of 3 and 9
Combinations of 4 and 6
Combinations of 8 and 3
Combinations of 9 and 1
Combinations of 0 and 4
Not only angel numbers are good signs. A few signs have happened to me. I've been trying to shift to Hogwarts and in a chemistry lesson my teacher was talking about Daniel Radcliff (who plays Harry Potter).
This one happened to my friend: Her maths teacher was giving an example of numbers and she was talking about the ratio of muggles to witches.