My friends received likely letters and I did not. Is it possible to still get in without likely letters?
Definitely still possible. Only the top of the pool gets likely letters, if I recall correctly?
Yes, it is possible, but your chances are a lot lower than your friends’ chances who got the likely letters. They are almost certainly accepted. If you didn’t know it before, you know it now that you are not at “the top of the pool”. But you can get accepted and be at the bottom of the pool of accepted students.
~95% of accepted students DO NOT receive likely letters.
OP: did you spend five minutes investigating this question before you posted this query?