Well, I don't even know what to say--the first thing though, is that you have to re-read what you have said and consider how realistic your expectations are--

Not to discourage you, but, you shouldn't base life decisions on what a lot of strangers on the street say to you--there aren't a lot of professional opportunities for people who want to perform traditional and maritime music, especially when, like you, they don't feel that they are strong enough performers to work as a soloist--

I would suggest that you get out there with your material, as a soloist, at open mikes, as has been suggested and offer to play for schools, and at nursing homes and retirement communities--

You'll get a sense of what to do and how to do it, and you'll also start to get some money--after a while, you may get enough regular stuff to keep you busy, but remember the cardinal rule, don't quit your day job!!