Would you recommend to do any EQ to Headphones for better sound?

Hey, i just got a pair of Beyerdynamic DT 770 Pro (80 Ohm) for gaming, and Video/Sound Editing.

My main Thing is Editing, and do gaming on the side.

I heard from a friend and some reddit post that people like to use Eq on their headphones ot make them sound better, and as you can image i immediatly jumped at the possibility to make my headphones sound better than they are. I noticed from the start that these headphones are very flat sounding. I personally have never owned a pair of good headphones so im kinda used to mehh sound, but these headphones are very flat, i dont feel that surround sound i feel with other headphones. I dont know if its EQ or something else, but i hopei ts the EQ. I just downloaded Equalizer Apo And Peace Ui. I dont know how to use any of this and do anything so any help is much appriciated. I have read a lot of comments from people that get kidna annoyed by someone asking what is the best EQ settings or sound for these headphones because sound is subjective, but i still have some questions:

1. Should i use EQ when editing sound, or should i leave it on default/off.
2. Are there some EQ settings better for gaming and lets say watching a movie, like is there a settings that makes it so that i can hear footsteps better in CSGO, but then when im watching a movie, this settings should not be on?
3. Is there like a preset i can downlaod, so i dont have to lift a finger by adjusting anything and i can be lazy or do i have to do my own work?

Sorry if this was long, but i thought i would be thorough with my questions and wants.

Thanks in advance :)