Since you are new to a manual transmission, I’d suggest leaving the car in the gear you are traveling in, often 4th or 5th. When you see a stop coming up, let off the gas and apply the brake as needed and leave the car in gear clutch out (engaged). As you reach slower speeds look at the tach and when the motor speed is 1,000 rpm, push in the clutch (disengage) and come to a full stop. Then you can put the car in neutral and wait out the stoplight. If you coming to a stop sign, after the complete stop with the clutch pushed in move the the gear selector to 1st and prepare to start up again as traffic permits.
As you get more experienced you may start downshifting to use engine braking when slowing down. Pretty much the same drill, leave the car in gear and push in on the clutch when the motor hits 1,000 rpm on the tach.