Bottom Line Up Front:
I suspect your problem is related mostly to patience and the motivation to practice. There are no shortcuts. Do the work and the time, and the proficiency will follow...assuming you have the requisite innate ability.
Comments:
If you are able to play the bass part appropriately with just your thumb, there is no problem. Nothing wrong with using the thumb when it gets the job done. However, if you can't play fast enough, you will probably benefit from developing finger style.
I don't see much point in learning a single finger plucking technique as it will have similar speed limitations to using your thumb. Pretty sure finger-style with alternating index and middle fingers is the most common bass technique. FYI, There are quite a few exceptions where you don't stick to strict alternation.
I have used two variations of alternating fingers. I started on upright and adapted my upright plucking approach to bass guitar. My thumb pretty much anchored on the E string or the corner of a pickup. My plucking fingers were fairly straight. I would describe the resulting sound as smooth.
Over several years, I transitioned to floating thumb and arched plucking fingers. To my ears this technique gives you a more punchy and focused tone. Also it gives you the ability to produce a wider range of tones that can be used expressively to make your bass lines more interesting.
From my perspective, anchored thumb is a simpler approach and easier to master. Although I use floating thumb and arched fingers the vast majority of the time, I still revert to anchored thumb and straight fingers as needed. IMHO some patterns are still easier for me with anchored thumb. But as my proficiency with floating thumb has grown, I revert less and less.
I suspect your problem is related mostly to patience and the motivation to practice. There are no shortcuts. Do the work and the time, and the proficiency will follow...assuming you have the requisite innate ability.
Comments:
If you are able to play the bass part appropriately with just your thumb, there is no problem. Nothing wrong with using the thumb when it gets the job done. However, if you can't play fast enough, you will probably benefit from developing finger style.
I don't see much point in learning a single finger plucking technique as it will have similar speed limitations to using your thumb. Pretty sure finger-style with alternating index and middle fingers is the most common bass technique. FYI, There are quite a few exceptions where you don't stick to strict alternation.
I have used two variations of alternating fingers. I started on upright and adapted my upright plucking approach to bass guitar. My thumb pretty much anchored on the E string or the corner of a pickup. My plucking fingers were fairly straight. I would describe the resulting sound as smooth.
Over several years, I transitioned to floating thumb and arched plucking fingers. To my ears this technique gives you a more punchy and focused tone. Also it gives you the ability to produce a wider range of tones that can be used expressively to make your bass lines more interesting.
From my perspective, anchored thumb is a simpler approach and easier to master. Although I use floating thumb and arched fingers the vast majority of the time, I still revert to anchored thumb and straight fingers as needed. IMHO some patterns are still easier for me with anchored thumb. But as my proficiency with floating thumb has grown, I revert less and less.