Sorry for getting your name wrong on my first comment jtw (not btw).....

It's good that you work on your core, and hey, we can all do more! One of my favorites is a simple glute bridge. Lie on your back, knees bent, and raise your torso as high as you can. Do 10 slow reps, and on the 11th, hold for 30 seconds. This is great for the glutes and lower back.

And a very simple sit up/ab workout starts the same, lying on your back, knees bent. Extend your arms straight out - reach for the sky or ceiling. Then raise your torso and focus on hinging from your waist. You'll only go up a little, but you should feel the tension in your abs. Repeat 10 times, less or more depending on comfort.

These are two easy-to-do exercises that will help your core, front and back.

All the best!

Joe