Hello Janice,
Familiarity is the key. That is true of instruments, as it is with individual tunes. When you are not familiar with an instrument, it often seems like a struggle to get the thing to do what you want it to do. That is why it is so important to learn three or four tunes very well.
At our Folk Club, I play less familiar tunes at the beginning of the evening, knowing that I will be too tired later on to follow musical notation with the necessary precision. At this point, I rely on my old favourites to finish the evening. Depending on how many members and guests show up, I play between five and ten tunes in a typical evening. If the weather is bad, and we have a low turnout, this can increase substantially. As previously stated, I find it best to leave my most familiar tunes for when I really need them.
Now I have discovered that you have a 72 Bass, I am not worried that you may hit the buffers. The 72 Bass will play just about any folk or popular tune you may wish to learn.
Posting your video was very brave, but you have nothing to worry about. Everyone starts at the beginning, and no-one expects anything like perfection at this stage of your journey. Just keep practicing and you will be fine.
I play at least a couple of bum notes every week at the Folk Club, but I am always able to laugh it off. A keen sense of humour and an understanding of the human condition is, in my view, essential for anyone who plays in public.
Kind Regards,
Stephen.