Re: losing weight but losing strength
When you're on a calorie deficit, your body has to break down it's own tissues to supply some of its energy: this comes from lean muscle and/or fat. It is almost impossible to prevent some amount of muscle loss while losing fat, but like I said, there are steps you can take to minimize that damage. My lifts always go down a little when I'm cutting, but not too bad. Usually only a drop of a couple of reps. If you're losing a significant amount of strength then you need to change something to make sure you're not losing muscle - have you gotten body fat % checks?
Keep your body lean, your blood clean and your mind sharp. -Rollins