[TOMT] [MOVIE] Movie where the guy who survived the serial killer’s attack, now years later becomes the same serial killer

Help would be greatly appreciated.
Watched this movie as a kid and
I have never been able to find this movie
Not even ChatGPT has been able to help me.
This is all i remember about this movie:

1) The movie starts with a serial killer attacking a group of friends around a road tunnel where our guy survives and escapes the attack

2) Our main guy leaves town and comes back like 10 years later maybe and the serial killer is now known to be dead

3) When the guy comes back, he meets up with this girl he likes but the serial killings start again

4) The guy goes to the woods in the mountain with the police to look at the body of the killer and make sure he is dead because of the recent killings

5) The new serial killer has the same costume and is a copycat killer

6) The girl mentioned earlier is confused about one of the two main guys in the movie being possibly the killer

7) The ending takes place around the same road tunnel where our main dude had escaped from

8) In the ending, the girl and the 2 guys confront each other where our main guy ( who survived the attack at the start of the movie ) slips up about a detail the girl never told him. It is then revealed after being traumatised by the attack years ago, he has now become the copycat killer.

9) He even takes up the original costume of the killer from the body in the woods

Please help me find this movie.
I legitimately have been trying for YEARS.