First of all, schools with good conditions generally have independent bathrooms. Because you can avoid going to the toilet at night or taking a bath in groups, it will be very troublesome.
Second, you can do a line-of-sight survey, because every school is different. For example, some apartments in my school used to have separate bathrooms, but some dormitories were collective dormitories, and there were many people living there, so he didn't have separate bathrooms.
Third, if you want to go to some schools with separate bathrooms, try to prepare in advance and investigate clearly. Then you can live outside when you go to school, of course, there will be a lot of extra expenses.
Finally, it doesn't matter if there is no separate bathroom. Sometimes it is better to get used to it. Like I wasn't used to it before, I didn't have a separate bathroom, but after a while, I still feel a little buzzing with you.
Like when I was in college, I didn't have a separate bathroom in my freshman and sophomore years, and my life was miserable. But junior and senior students will have separate bathrooms, because our school has changed apartments.