Recommendations on how to advance my setup/workflow?

Hardware:

Android tablet (Galaxy Tab S9 FE) for drawing.

Lenovo Y730 laptop for editing.

Software:

Infinite Painter (tablet)

Rough Animator (tablet)

Davinci Resolve, free version (PC)

Audacity (PC)

Workflow:

  1. Make up the script, record audio in Audacity, slap together a draft audio version in Davinci with minimal sound design.

  2. Open the audio in Rough Animator, do a sketch version of the whole thing.

  3. Turn the sketch figures into characters (still in Rough Animator).

  4. Color the characters.

  5. Draw/color the backgrounds. Sometimes I draw these in Infinite Painter, but that's an extra pain in the ass that I am not a fan of + Infinite Painter crashes and lags a lot.

  6. Export to Davinci, where I add phoneme pngs for lipsync, add camera movement, finish up sound design where needed etc.

The pain:

Infinite Painter has functionality for in depth layering, filters, blurring, masking etc. Rough Animator doesn't (not in a usable way, anyway). But I wonder if there may be a piece of software that would actually allow me to do the same stuff I can do in Infinite painter? Especially stuff like blurring and using masks/layers to add shading in a non-destructive way.

And of course, any other suggestions. I am certain my amateur workflow could use some improvements I am not even aware of. I am open to purchasing some new hardware eventually, even switching to an apple product, if absolutely unavoidable.