I am no expert, but are your photos not saved in Google or similar, as well as being on your physical phone?
If so, you should just be able to access them on your new phone without actually having to move them over?
Same with emails, normally, you just have to sign into your email account on your new phone to access them?
Not sure re contacts, but I don't recall having any problems when getting a new phone.
And apps you can just reinstall.
Google or something like ChatGPT could probably "talk" you through sorting, deleting and editing photos and emails, if you can't find someone to help (sorry I can't, I'd be too worried about doing something wrong!)
Good luck! Don't delete anything from your old phone until you are sure it's on your new phone!