I mean no offense at all, but counting "live blues jams" as gigs, knowing a dozen riffs, and having difficulty learning 2-4 songs in a week does not suggest a sufficient level of competence to be a hirable bassist.
When you attend the blues jams, how do you honestly feel you do? Do you get tripped up on forms, or have any trouble being on the 1 EVERY time? Do you get called up to play more than one song, or do they have you play one and then call up someone else? Generally speaking, a good indicator of how you're doing in most jams is that you are allowed to play at least a couple songs in a row. What about when a song is called that you don't really know? Maybe something with a m2 chord, or a m6, etc? Are you able to hear those changes and own them?
These are just some of the metrics that other people will use to decide if they want to ask you to play with them. Obviously, none of us on TB can accurately assess your skill level, so all we can do is read into what you've said.
When you attend the blues jams, how do you honestly feel you do? Do you get tripped up on forms, or have any trouble being on the 1 EVERY time? Do you get called up to play more than one song, or do they have you play one and then call up someone else? Generally speaking, a good indicator of how you're doing in most jams is that you are allowed to play at least a couple songs in a row. What about when a song is called that you don't really know? Maybe something with a m2 chord, or a m6, etc? Are you able to hear those changes and own them?
These are just some of the metrics that other people will use to decide if they want to ask you to play with them. Obviously, none of us on TB can accurately assess your skill level, so all we can do is read into what you've said.