I mainly perform following exercises: running (1-3 miles), push-ups, pull-ups, squats, sit-ups, calves raises, planks, legs raising, and bridges.
I vary them a little. For example, one day I do chin-ups instead of pull-ups, lateral planks, or lateral legs raisings, however, I never use weights.
Should I include anything else? (not considering things like stretching or walking, which I also do).
Add-on: I am the OP (who created an account now). Thank you, Doc, Renny and Dave for the feedback.
I can't use a barbell, but I could use a heavy backpack to increment my bodyweight.
Changing these points below, would my routine be complete?
Squats, enhanced with backpack (to cover for deadlifts).
Vertical push-ups (to cover for barbell military press).
Horizontal pull-up (to cover for barbell bent over row).
Plus, adding dips and back extensions.
I could also enhance any exercise with the backpack or vary them (like doing push-ups on the tips of the fingers). The idea is still the same, be complete and simple, so I'll do it systematically.