In a Flea video he says, with practice comes comfort and strength, and comfort and strength is what you need to become a good musician. I try to pick up the bass everyday, and really notice it in my tone when I have left it for a while.
I iike this guy for his focus on vocabulary and laid back approach
https://www.youtube.com/channel/UCTLM0C5Acp-0xi4ZEb-mSQg This guy for his enthusiasm and encouragement, and pushing technique without becoming overwhelming (he als reminds me of my best friend in ways who as plays bass very well), I particularly liked this video.
https://www.youtube.com/watch?v=cgle3nd2gOc I find Scott's lessons often above my level, but I imagine if I subscribed to his courses he would have lads of good content. I keep returning to this video and agree with his sentiment abut the value of walking bass lines in progressing in playing non waiking basslines. I know I need to focus more on chord tones, and this will help get them under my fingers, and it also helps with including chromatic approach notes in a meaningful way. (He does seem t plug his courses more and more which is a becoming annoying)
https://www.youtube.com/watch?v=Ilh4uMAdss8 I'm on the fence with this channel, partly because I find his shimmying of his shoulders like a school girl flirting with my older brother a bit distracting.
https://www.youtube.com/channel/UCFaQQPCAUkyG3kcTP0TeGag