I am also aware that I used to remember loads. I used to remember every that happened, and it frustrates me to know that, because now, I can't remember anything!
I have always been poor at remembering things, I have to make a special effort if I want to retain things, but note taking is my best way. I have a mechanical key code lock on my garage / workshop small door, if I don't think about it I can punch the codes in without a problem. Start trying to remember the numbers, then I get it wrong. If I don't go in for a while, I forget the sequence.
I can't remember vehicle reg numbers or phone numbers, it need some hard thinking to remember my own, but I do always get there. In the car I have an audio + video recording car cam, if I have to remember a reg number when driving, then I just read it out to be recorded on the cam.
At school I was never able to remember the times tables, I used to have to 'cheat', by a weird process of remembering a few, adding or subtracting for the rest.
When cooking a meal, I tend to work with a pad and pen, writing myself a sort of menu of what I have in mind to cook for a meal, rather than a recipe.
In the pre-satnav years, I used to stick a list of towns to aim for on the dash when driving any distance.
No, I am not getting worse as I get older.