The 21-year-old midfielder left Chelsea to join Brighton on transfer deadline day last summer in search of more first-team football.
However, a week later Graham Potter, the manager who wanted him, joined Chelsea and he has been struggling to get regular game time under Roberto De Zerbi this season.
He has made just three Premier League starts in the ongoing campaign and Gilmour admitted that the original idea was to move to Brighton as he wanted to play more football.
The midfielder insisted that he is working hard to break into the team and stressed that there were no guarantees that he would be playing regularly had he stayed at Chelsea.
He admitted that he is enjoying working at Brighton where he has a great staff who want to develop him as a footballer.
“I wanted to go to a club where I’m going to try to play”, Gilmour told The Athletic.
“It’s not worked out but I’m settling in, trying to work my way up.
“There are tough days, I can’t lie, but the team we’ve got is special.
“We’ll keep pushing forward and see what happens at the end of the season.
“I can’t say if I’d stayed at Chelsea whether I would have played.
“I made my decision on what I knew was best at the time.
“I’m really enjoying it here. We’ve got a great team, a great manager, the staff are right behind us.”
Gilmour is a full Scotland international and has earned 16 international caps for his country.