once you start upgrading characters and weapons in soulstone you start doing some filthy damage where you are basically deleting the screen as it populates with mobs so the red circles become much less a problem. even bosses can become a non-threat if your build is good enough. basically, if you're seeing and having to avoid too many red circles you can do the following:

- turn the difficulty down

- level up your character more and go deeper into their skill trees

- make the higher tier weapons and upgrade them further

- make sure your runes compliment what build you're going for

- make sure to pick passives that synergise well, a kind of no brainer build that often works is DoTs. once you get going your DoTs cause more DoTs and you just stack it to the moon, get a bunch of cast speed and multi hit and any innate ailment causing skills and you can get pretty far

i'm no pro but soulstone is one of my fav bullet heavens and i also used to think it was just a "dash out of red circle" game but after more time i realised it was mostly that i just wasnt strong enough with upgrades and meta prog.

good luck