FWIW, I have played pool all of my adult life. From my teen years to age 52 I went into a poolhall/bar on rare occasions, maybe two, three times a year. I didn't know diddly-squat about how real pool was supposed to be played. I just shot a ball and whatever the table had in store was what I shot next. I believe they would have referred to me as a banger.
At age 49 I retired from my job at General Motors and needed another hobby to help pass some time.
At age 53 I decided that I wanted to take up pool seriously as that hobby. I have progressed from a banger to a player that has run up to three racks of 9-ball, and has run 37 balls in 14.1 (yeah...I know 37 balls isn't so hot, but I only played in that league for one session and haven't played 14.1 since).
I'm not great by any stretch of the imagination, but I'm a LOT better than I used to be. Given an inning or two, I can get out against you, provided the balls are laying good.
Watch videos, get some private instruction, go down to the poolhall and watch the good players play, and ask questions to those good players who don't mind answering them.
At your starting age you are never going to be a world beater, but I bet if you take it seriously enough and work hard to improve, you will eventually get to where you are respected by your peers in your local halls/bars.
Good luck and good shooting!
Maniac (closing in fast on 68)