So when you took two weeks off, you got stronger, when you tried to lift every week (on top of everything else you were doing), you got weaker.
Hmmmm.
Maybe read these two books:
The Barbell Prescription | The Aasgaard Company
Practical Programming for Strength Training | The Aasgaard Company
I think the point that you're missing (and keep beating your head against) is twofold: we get stronger by recovering from training, and the weekly calendar is a man-made construct that seems hard for people to let go of.