I have a questions i saw few mods for other phones these mods give free storage on Google photos Pixel 6 is my new phone before im using oneplus 7 with PixelExperiance on these rom i have free space 

No they don't not any more. This is not the case for Pixel 6 and 6 pro.Pixel phones have free Google Photos storage. There's no need for a custom ROM or any mod.
But i have Pixel and i dont have free storagePixel phones have free Google Photos storage. There's no need for a custom ROM or any mod.
Read my post just above yours!
On my oneplus 7 with Pixel experiance have free space i thinking sometimes copy photos to op and from oneplus send to google photos
I have an OG pixel and this is what I do. I use Resilio Sync. Pretty easy to set up. I used to leave the OG Pixel plugged in with a max charge set at 50%. Not taking many photos lately so just turn it on to sync occasionally.Any phones up to Pixel 5 still get unlimited Storage Saver in Google Photo, you can simply grab an old Pixel, setup a 2-way sync with FolderSync/SyncThings between the 6's DCIM folder and voila, free photo storage.
I am not sure about you, if there is such hack, I think Google can simply terminate your account and you lose everything, does this worth it to you?
Google just sweetened the deal today.Just send a text to Google and ask for your free stuff.
Use code: "free stuff now"
Umm, I think you're wrong. Not about the lack of custom ROMs with an "unlimited Google Photos" hack, but hacking itself.I think there is no custom ROM with hack for the " unlimited gphotos hack".. hacking is illegal and there is no custom ROM with that sort of hacks.
For 1.99 euro you have 100 gb of storage.
No they don't not any more. This is not the case for Pixel 6 and 6 pro.Pixel phones have free Google Photos storage. There's no need for a custom ROM or any mod.