Here’s what consumers have asked with answers from Adobe Stock staff and previous consumers.
Dreamstime.com I get premium images or try their free section every once in a while. There are other free sites, but the content here is more unique. Also Stockfreeimages.com is a sister site I use frequently, tons of free stuff sometimes not easy to find though.
If you did the free trial and did not cancel it then that is why you are being charged. If you don't cancel prior to the end of the trial they automatically lock you into a yearly commitment. I would call or chat with them and tell them that if they don't cancel it for you and waive the $60 early cancellation fee then you will post negative reviews about your experience. That is what I did and they waived the fee for me. They were going to make me pay it until I told them that I am basing my review on this interaction.