It was always about the puzzles, not easy traversal. Each room or space is basically a puzzle to solve and the goal is to find a way forward, using what you know and being perceptive. The controls could get clunky or even frustrating at times, but it's okay if you just take things slow and appreciate the atmosphere and wonder of discovery.
The shooting is easy as pie, because Lara has auto-targeting. It's just about how to best clear the enemies without taking too much damage. Another puzzle, basically.
I can understand how the games may not be for everyone in the modern age. I used to enjoy the feeling of being deep in some place no-one had been for ages, feeling isolated but curious to see what was around the next corner.