Try the app Strong or get an Apple Watch and start tracking your strength workouts there (closing the rings is so satisfying - seems silly at first but it really works).

not really, but maybe have a have thonk about doing something for the hell of it, because it's fun or whatever. Just experiment and have a play and see if you can do something physical that's going to intrinsically motivate you (doesn't have to be weight training specifically, although you will most likely do it at some point or another to improve at whatever other physical activity will intrinsically motivate you).

Not everything in life needs to be gamified and you can make an "app" to track gym/life progress yourself with just excell/google sheets to track progressive overload/your measures and your phone to see visual changes in your body.