Thanks for your response.
Firstly, I’ve already done the first step, i’ve gone to icloud.com and compared the number of my pictures. Not all of them were showing there. I knew i wouldn’t see my whole photos because of my upload speed. For example, I can never upload photos to the app “Files” quickly. It’s so slow that i can’t upload as much as i want to.
I started to use iCloud Photo Library after i got not-enough-space notifications. I thought it could increase space on my phone. (My iPhone has 32 GB storage and now 1,93 GB is available. I have 50 GB iCloud storage and 42,9 GB is available.) I was already keeping my pictures on my computer to make sure i can reach them in any case so they’re fine.(By the way, i don’t have a Mac so i can’t use that way to keep my pictures). But my plan wasn’t keeping their low-resolution versions on my phone and the original ones on iCloud Library. When i open them, they need to load and use internet. But i want to see all of my pictures on my phone (i usually delete the unnecessary ones anyway).
So, my photos are safe even though their edits disappear everyday. But i have questions. Like if i turn off the iCloud library; do my photos that synchronized into iCloud disappear on my phone? (this situation occured once) Because i’d rather use iTunes, if i’m not gonna use iCloud completely for what i need. And if i reset my phone then restore, will my pictures show up again? I actually will reset my phone in summer because it has unnecessarily full storage.
Once and for all, if i quit using iCloud and use iTunes instead; will my contacts, voice memos, notes, music that i downloaded by my computer etc. restore too, if i restore my phone by iTunes? I know i made it complicated but the things i store on my phone are seriously important for me.
Thanks again for your attention!