It might be time for you to get organized with a real strength program! I'm a big fan of 5/3/1, here's my elevator pitch / quick breakdown for it:
It's fairly simple and straightforward, focussing on the compound exercises that you mentioned (Squat, bench, overhead press and deadlift) and you can get it done in 45 minutes, Including warm-up and accessory exercises. Typical day looks like this:
Main work: 3 sets of a big compound lift (light, medium, heavy)
Supplemental work: 5 lighter sets of the same compound lift
Accessories: This can be a wide variety of lighter work, focussing on mobility and hypertrophy type lifting. Dips, pull-ups, shrugs, hanging leg raises, rows, curls, whatever you wish. These can be supersetted with the main and supplemental work above
There are lots of different templates, you can do 2, 3, or 4 days per week depending on your schedule, and there are quite a few apps that will do the calculations and essentially tell you how much to lift each set. If you're interested at all I can definitely help you get set up