The 23 year old moved to Glasgow from Croatian side Osijek in the summer, but was forced to wait for his debut due to an ankle injury.
Nevertheless, the player has assured fans that he can improve on the glimpse of a performance that they witnessed at the weekend.
Grezda looked a little off the pace in the contest with St Mirren at the weekend, eventually being subbed after 55 minutes by Daniel Candeias.
However the Albanian has acknowledged that it was far from his best quality at the weekend, while vowing to get stronger and quicker as he plays more minutes for the side.
November 3, 2018
Grezda spoke to 'Rangers TV' after his debut, telling the club channel of his display: "It was okay but I'm still not there because it was my first game in the starting XI. I'm quite happy but it's going to get better and better.."
The Albanian continued: "Was I frustrated at being left on the bench for so long? No because I was concentrated only on training and putting in hard work. I was waiting for my chance. Now I look fitter than I was."
He concluded: "Everybody knows I didn't play for a long time because of injury. Now I feel better. I really feel I'm coming back. I feel I still need more games but I'm almost there."
Rangers boss, Steven Gerrard was saisfied with Grezda's performance, telling 'Rangers TV', "I thought he grew into the game," Gerrard said. "His best moments were probably the last five minutes he had. He hit the post and had he scored it would have helped him a lot. He's had a bad injury and a tough time getting back. He will get better."
Gerrard's side ran out 2-0 winners away to St Mirren, which saw them move up to 3rd place in the Scottish Premier League standings, four points behind rivals Celtic and five behind leaders Hearts.