How old are you?What is your workout looking like for sets and reps?
Do you vary them depending on what muscle group you're working out that day?
Having a hard time with this as I finish up my new workout spreadsheet.
No one gets stronger lifting weights. You get stronger by recovering and adapting to the weight.
Old guys (you can decide what's old) have a harder time recovering from high volume but need high intensity. I am able to make slow but continued progress with HLM using sets of 3-5 reps. I'm over a decade past the Denny's discount age.