Or are you always innocent?
Not everyday, but I try to do a personal inventory as often as necessary. If I recognize some inappropriateness or it is pointed out to me I try and step up and face the music. If it's not on me then I firmly state that. If I review my behavior and work at changing it, or even make amends if I have gone too far, then I got a chance at being a better person. I guess that is guilt or innocence.
Probably depends what I did - I have never formally been charged by the police so I guess we are into the small stuff. If I have done somethign bad on someone I do admit my stupidity apologise and try to make amends. But if its a silly row between me and one other I may well flounce off - As I write that I feel a bit silly being seventy and still flouncing off. But I don't hold a grudge.
I worked for a long time as an outside contractor and learned early on that I was the expendable one. Then I realized that was part of the service I offered; I was there to protect the foolish and take the rap. So I'd take the rap and play it through even if I wasn't even remotely involved. It turns out that that is a valueable service in many shops and is appreciated. The humor was that usually the one who fouled up would be my defender and "save" me.
I admit to being responsible for the actions I've actually taken. Whether that constitutes something praiseworthy or something to be ashamed of, is a separate issue connected with societal morality or group ethics. As for "guilt", that is a theological concept that is in turn dependent on another theological concept, "sin", to which are attached still other theological concepts. As an atheist I regard theology as a faux discipline which has no value outside of its own ingrown self-referential concerns and is largely untethered from actual reality. So I don't pay attention to it. In that sense I do not "admit guilt". So -- the answer to your question is really a function of what you mean by "guilt" and who is deciding what constitutes "guilt".