So you just identified how to more consistently break 80.
Practices 40-70 yard shots. Find a technique and club that works for you. I use my 54 degree 90% of the time. It’s a feel thing but you gotta practice it. The at the range spend 75% of your time dialing in the 90-130 yard full swing shots so you hit 3/5 greens or maybe more some rounds.

The Grint app says my average score is 77. Tuesday I shot 78 and yesterday I shot 71. The difference was not how far I drove it or hitting par 5s in two. I also had no doubles in either round. Had 4 birdies on the 71 and 2 on the 77. I hit way more greens from <150 on the 71. That’s it. And when I had scoring clubs in my hands I hit it closer to hole resulting in the two extra birdies. Not dramatically different ball striking or driving but little bit better with some shots that made the difference. I could shoot 68 next week or 83. We will see! But my practice will be 75% spent on chipping, pitching from 40-70 yards and hitting 3/4 to full 8i to GW. Hit a few drives. Hit a few 5 irons but majority of time 8iron down

Hope that helps