Crop is very different from resize @SunshineNY
I use an App, for resizing the photos with my phone, and the free tool that is part of the basic set on Windows, on my desktop.
Google Photo, as mentioned by @AlejandraMaria , is an interesting option if your set is “high quality” that gives you also the possibility of unlimited storage.
In this case you can also upload directly a photo in Connect (on mobile only) choosing Google Photo as the source
When you upload a photo, tap on “file” then tap on the hamburger menu on the top left corner, and scroll down to Google Photo