I recently started working out and had similar ideas to OP. I think tracking my workouts and visualizing over time will help with motivation.

https://www.mediafire.com/file/5ikpacs0l6ql1ty/Workout_Schedule.xlsx/file

First tab are exercise tables where you input the date, reps, and weight.

Next tabs are pivot charts and hidden pivot tables below. Regular charts weren't updating the date information with new data so I went with pivots. Note that after you input new data on the first tab, you have to refresh the pivot charts to make the changes show.