Lose the number of (one's) mess verb phrase obsolete
To be dead or killed. Originally a military and naval term
Many soldiers lost the number of their mess when the enemy attacked at night.
I'll fight back to the ropes though I might lose the number of my mess.
To die or pass away
1. To pass away
2. To depart suddenly
1. One's success has gone down or ended.
2. One has passed away.
To die
The verb "lose" should be conjugated according to its tense.
Try to avoid to change something because doing something else could make things worse
I could have changed my answer, but I decided to leave well enough alone.