See above…
But - Songs are VERY helpful.
Want to master the Fretboard?
Mark Smith’s Sight Reading or Ari Cap are popular.
I think a blend of songs and lernin’ are best, you don’t have to do one or the other.
What I found…
I despise SBL
Mark Smith - sight reading/scales/chord tones - do some, stop, do more, stop, go back, etc. It’s not a do in a row until your eyes bleed from boredum.
Ari- haven’t found value I didn’t get with Mark
Rich Brown (The BrownS’tone on YouTube) - has been a HUGE help. a little disorganized, but if you just sort all his videos oldest to newest, and do the lesson ones, its great.
I have learned more fretboard through his exercises than anyone else.
A lot just takes time, doing whatever. The whatever is whatever holds your attention, doesn’t matter much past that honestly, you will learn regardless.
And there are still periods of waffling and wandering.
One of the reasons I went back to the 50 songs for a bit now and banging some out.