I’m not sure how many days a week you run 5x5 but I always found it to be lacking upper body work at its base. I generally did 5x5 with ancillary lifts for upper body and added in Boring But Big sets for muscles not worked on that day (i.e. 5 sets of 10 at 70% of 1RM for chest on the days when 5x5 doesn’t call for it). Basically I do a fully body workout in an hour and a half every time I’m in the gym (three days a week).

Below is an example from the chest day on 5x5. Before that, I will also say that you need to do deload cycles to continue gains. Once you get stronger deloading won’t work as well and you should switch to 5x5 Madcow but you aren’t there yet.

Squats - as a super set with abs and pull-ups with no rest between sets -Abs include twisting leg lifts first, mid abs, then upper -Body weight plus a belt with progressively heavier weights hanging for 5x5. On BBB days (shoulder day) use a machine for 5x10.

Bench and row - for BBB do inclined bench for 5x10 and a machine or dumbbells for row

Accessory lifts for biceps and triceps everyday. 4 sets with increasing weight on the first three then drop down for the final set and do as many as possible. For me curls looked like this recently 85-95-105-85lbs for 8-8-5-9 reps on a straight bar. Go back and forth and biceps and triceps as a super set to cut down on your time in the gym and add in the calve exercises I mention later if your gym allows enough free equipment at any given time to do this.

Then I do a rotating mix of other things like face pulls, straight arm pull downs, cable flies, or whatever else I don’t feel I worked hard enough that day. This usually includes additional lifts that target the areas I’m focusing on that day.

Finally, calve raises for 5x15 for about 70% of what I can squat.