If you give what you consider to be a good performance, and the audience likes it, that's the best of all possible worlds.

If you give what you consider to be a bad performance, and the audience still likes it, you may be being too hard on yourself, or you may have an audience that's not very discriminating - but in either event, you've succeeded from an objective standpoint, regardless of your own feelings.

If you give what you consider to be a good performance and the audience doesn't like it, it could mean that you're not as good as you think you are, or that you have an audience that just isn't into your kind of music and is unwilling to give anything new and different a fair listen, or that you have an audience of the kind of dipshits that have to disapprove of everything to show how sophisticated they are, or that you have an audience of people who are so tired that they can't get enthusiastic about anything (we get this last with some gigs for bus tour groups who've been on the road all day and then had a big dinner).

If you give what you consider to be a bad performance and the audience doesn't like it, either go home and practice, or go out and find gigs with less discriminating audiences.

I think that covers all the permutations.

Peter.