Your name will need to be changed in three places.
Change your Apple ID name here:
https://support.apple.com/en-us/109353
Change your device name here:
https://support.apple.com/guide/iphone/change-the-name-of-your-iphone-iphf256af64f/ios
Change your name in Contacts.
You also will want to log into any email accounts through their web interfaces, go to account settings, and change your name there as well.
If it were truly in support, they’d donate profits or feature designers from the community. Some do, but a lot of it is cheap rainbow colored junk from China to increase profits.