Ok so not sure if this will be useful to any but if it is then great.
There are many ways to crop, resize, and post links to photos and I will share how I have done it for years.
I email the photos from my phone to my PC. I am running Linux but that probably does not matter. I save the image to my desktop.
I then use a program called GIMP, it is a free program and has many features, the features are fairly simple.
I open the photo in GIMP
File, Open, select the file
Tools,Selection Tools, Rectangle select
This lets us select a rectangle to crop, my photos are often poorly composed then refined this way.
Image, Crop to Selection
this crops the photo
Image, Scale image, I usually choose 800 wide
File, Overwrite.
Close Gimp
File, Close all.
It will give a warning about unsaved changes, ignore that.
go to Imgur.com
click on "new post" then find the image on your desktop and
top right corner will be three dots..choose "get share links"
choose "BBcode" and "copy link"
past that link here as I did.

From your point of view this may really be a sucky way to do this but I have done it this way for a few decades so muscle memory carries me through it. Once in a great while GIMP commands change. IMGUR seems to work decent THIS way, there is a way to create your own collection of images that you can come back to later but that can be a bit flakey. this way just creates a hit and run image and a link, it always exists but you may not easily find your way back to it later.