Not really. Once you have committed to iCloud Photos you will have to increase the storage plan as they build up. That is the whole Apple, Google or Microsoft marketing plan.
If you have a computer you can download all the full resolution copies then turn off iCloud Photos and manage them on the computer.
Research it well or see below
Do this at your own risk
Transfer photos and videos from your iPhone or iPad to your Mac or PC – Apple Support (UK)
If you can’t import photos from iphone to computer try these ideas.
If you can't import photos from your iPhone, iPad or iPod touch to your computer – Apple Support (UK)
If you have iCloud Photos turned on, you can always download them directly from the iCloud website then turn it off.
Download iCloud photos and videos – Apple Support (UK)