I'm certain this is an unpopular opinion, but I just wasn't too big a fan of BioShock. I picked up a combo pack of both the first and second games a few years ago, and after a few hours into the first, it just didn't feel good to play. Perhaps it's just because I've played so few shooters, but I was horribly bad at aiming the guns, frequently died in what I felt were supposed to be non-challenging portions of the game, ended up running in circles around levels because I couldn't find the items or plasmids required to progress, and could not stand fighting the Big Daddies. I remember that they just would not die, despite pumping what felt like dozens of bullets into them, and I didn't feel like the plasmids really added any strategy to fighting them. Big Daddies alone were responsible for multiple repetitive deaths that just frustrated me more than anything. I can't remember exactly where I left off, but I know I got past Doctor Steinman, and shortly afterward became too discouraged by constant deaths at some fight and set the game aside permanently.
With that said, I did like that the game's environments and atmosphere were creepy and unsettling to investigate. I also enjoyed the 40s-50s aesthetic, and how it contrasts against the massive bloodshed you see all throughout Rapture. I've seen a lot of coverage and analysis of the game from various youtubers, and I still respect the game's story and themes, even though I couldn't get to those points in the game on my own.
I guess it's worth noting that I was playing through it on Normal difficulty; would it be worth it to try replaying the game on Easy?