It depends on the sort of storage. Many ISP accounts give you X mb or GB of storage as well. These can be 100% accessible. Learn to use free FTP to load up images. Free cheap and easy and lots of storage. Simple and easy. But beyond people thinking pushing beyond a single button is difficult.

You own your own space and control it.

The trouble with photo hosting services is someone else controls it. And decides to bill for it eventually.

Free sites like Facebook and Instagram sell your photos. And may not allow sharing/displaying the images.

But people on here have photon hosting sites that work.