Transfer of photos to iCloud
There are 6300 pictures on my phone and I want to upload them to iCloud. I have started to use 50 GB of iCloud storage, therefore, it must be enough to store 6300 pictures and videos (in total about 20 GB). How can I transfer all the pictures to iCloud or are the files uploaded in iCloud automatically?
Moreover, I have transferred some old pictures and videos to my MacBook, making it total about 9000. Can they also be transferred to iCloud?
Finally, knowing that my pictures and videos are stored in iCloud, can I easily access them from my phone/laptop by just opening Photos? Or I should go to iCloud.com?
Thank you very much
iPhone X, iOS 13