If your Google quota looks to be filling up, and you’re considering buying more space, check your usage first.

Drive and Mail has Trash folders, but they count against your quota. Drive doesn’t automatically delete things either. I found 3 year old cruft in there. YMMV

See your Google usage here:
https://www.google.com/settings/storage

Drive Trash is here:
https://drive.google.com/drive/trash

GMail trash is here
https://mail.google.com/mail/u/0/#trash
Alternate accounts will be /u/1, /u/2, etc.

Jumbo non-trash emails are here:
https://mail.google.com/mail/u/0/#search/larger_than%3A10mb

Videos and Movies in “Photos” are here:
https://photos.google.com/search/_tv_Videos
https://photos.google.com/movies

You cannot sort Photos by size,
but you can find them in your drive, sorted by size here:
https://drive.google.com/drive/quota