Sturridge told City's website: "I'm happy to score a goal, but I'm very, very upset that we lost the game.
"I was surprised to be in the squad and elated to get on the park. I thought I did well, the lads played tremendously in the second half and the fans got behind us, but unfortunately we let them down.
"The main thing is to win the game. I'd rather win 3-0 and not score than lose 2-1 and score. So I'm very upset about it."
With the Blues back in Barclays Premier League action against Derby on Wednesday, an in-form Sturridge could again feature, but he's playing that talk down for now.
"I just think I need to take my time because I felt really tired at the end," he admitted.
"I still need to gain a lot of fitness because first team football is completely different to the youth and reserve level. Games are a lot faster and defenders close you down quickly so you need a lot more fitness.
"After being out for the time I have, I've only been back for about a week and a half now, so if I get more time I can progress a lot more.
"I'm eager to play, as everybody knows, but if I get an opportunity then hopefully I can take it. If I don't I'll just be patient and wait.
"You've got to be mentally prepared in any job you're in, so if I can get on the pitch and do well then so be it, if I don't do very well then I'll just pick myself up and keep trying."