Multiple student loans and wage garnishment

I have 8 student PRIVATE student loans, totally, more than $150,000 which are in default and will probably grow as they take on the fees. I am 60 years old right now, and probably for the rest of my life, I will make very limited income, doing babysitting or other none w2 wage earning type jobs. My long time significant other pays all the household bills. I do not own a home and have no savings. I have been trying to pay the miniumuns on these loans but now my money has dried up. I understand that private loans can garnish your wages. If I do get a job, having these wages garnished might be lower in payments than paying the minimuns, which are around $1000 a month or more. Why would I not just let this happen?

My questions are:

if they garnish my wages, and I have eight loans, can each loan take 15% or is it one garnishment at time?

once your loans are in Collections, do fees continue to be added to them? In reading the posts, it sounds like these loans get moved from one agency to another and each time this happens, do they add collection fees? does interest also continue?

I dont care about my credit, I will never buy a home, and everything else I need, I pay cash for. If I end up in a nursing home, I have insurance to cover this, so I am wondering if I should let these bills stress me out for the rest of my remaining life.

P.S. these loans accumulated when I younger, attempting to get a Pharmacy degree... but medical problems did not allow me to complete.