I’ve been trying to teach myself how to solo over chord tones/make the changes in the blues and after watching probably 1000 hours on the subject, I’m more confused than ever and even feeling a bit hopeless. I understand you need to know the major thirds, arpeggios, and roots of each chord which I do. I’ve learned modes, hybrid scales, and just simply tried listening to hours of blues and just playing, but It’s been more than a year and I can’t figure it out. Do I need a teacher? I know this stuff but just can’t apply it to the guitar and have no clue why or how to go about it.
Don’t feel hopeless. You might just be trying too hard. What sort of blues / artist are you aspiring to. Different styles sometimes have different ways of going about things. Most of the time people over-complicate things.
I’ve almost finished writing an article on rock%roll soloing that might be of help, hopefully be up within the next week or so.