@greg67 Might sound corny, but it was more of a mindset change for me that helped.
I used to just keep doing reps until I got tired, which happened to be around the same number each week. It got a bit boring tbh.
To improved I told myself each week I would do at least one more rep than the previous week. It's easier if that rep is in the start of your sets than the end because you are less fatigued. You said you max out in anywhere from 3-8 reps, so I would recommend finding a starting number (even if it's only 3 or 4!) and methodically improving upon that week after week, instead of just trying your hardest each week.
I used to just keep doing reps until I got tired, which happened to be around the same number each week. It got a bit boring tbh.
To improved I told myself each week I would do at least one more rep than the previous week. It's easier if that rep is in the start of your sets than the end because you are less fatigued. You said you max out in anywhere from 3-8 reps, so I would recommend finding a starting number (even if it's only 3 or 4!) and methodically improving upon that week after week, instead of just trying your hardest each week.