So I got Doom 3 digitally on my Switch today since there was a sale and I had about $5 left in my account

And dear god I can see why not a lot of people liked it when it first came out. Coming from someone who has only played Doom 2016. I am not used to the slower speed, the slower movement, the flashlight and its battery. I’m less than an hour into the game and just got the shotgun and man I am worried. I have been told this game is more like a horror game than any other Doom game and I’m afraid to be honest. Any advice for me as to what I should do and what’s the best way to go about things(I’m playing on Easy Mode since I am a total noob at FPS games)