My understanding (I’m a former H1B myself) is that if you lose your current job and sponsor you have some time (don’t remember exactly how many months) to find

My understanding (I’m a former H1B myself) is that if you lose your current job and sponsor you have some time (don’t remember exactly how many months) to find a new sponsor otherwise you need to leave. Didn’t happen with me, but I had a couple of coworkers that came to work for the same company and were let go and had to leave the country because they didn’t find another sponsor.