Absolutely NOT a know it all on weight lifting or fitness, but having come to it after I was 40, I learned a few things. Such as proper ways to gain strength and weight lifting. Starting Strength is done in 8 week increments, 3 times a week (M, W, F).
One day: Back squat, Press (overhead), Deadlift
Next time: Back squat, Bench Press, Chin ups, if you have time and know how to do them, Power Cleans
Just keep alternating the days. You need to find a solid beginning working weight and then each time add on 5 pounds. 3 warm up sets. Then 3 sets of 5. Good form is the most important things. If you find yourself, for example, not going to full depth on the squats, then do a set of 5 and two backoff sets (around 90% of your top set). In week 7, you can jump more than 5 and start doing heavy triples and doubles. Then taper for a week and test out 1 RM. Then reset (usually 70%) and start again.
You WILL get stronger. I have done multiple such cycles and even when not cycling still do the power lifts on the side as assessor work. Trust the process and the gainz will come. You can also do with dumbbells. But again, you need to be able to go up in weight.
Or just do whatever is comfortable as I have become a workout/weight lifting nerd. Fully admit it.