I work in an open floor plan where managers frequently shout and have long conversations next to me with each other.
I use a mix of brain.fm (or similar white noise) and apple AirPods pro. As a combination, they work surprisingly well at blocking out enough noise to let me remain focused on whatever problem.
Just be conscious of the effect long-term exposure to constant loud noise can have on your hearing, even if you're able to concentrate. Drowning out loud sound with louder sound is not particularly good for your ears.
mynoise.net does a pretty good "busy cafe/restaurant" noise generator with burbling unintelligible voices that drown out conversations. I used it extensively when directing an animation series where the production staff insisted on having Heart FM playing loudly the whole day.
I use a mix of brain.fm (or similar white noise) and apple AirPods pro. As a combination, they work surprisingly well at blocking out enough noise to let me remain focused on whatever problem.
They are indispensable to me now.