Limit apple id on 1 phone..how to increase

You can only create so many Apple ID’s with iCloud on a phone in one year as the related article that you were reading when you posted your questions to the community explains. You can create another Apple ID/iCloud account on another device and sign into that ID on the phone.

Read this again

If you see a Could Not Create Apple ID or Could Not Set Up iCloud message - Apple Support

You cannot have more than one Apple ID on your iPhone that is linked to your iCloud account. You can use another Apple ID for your Media & Purchases.

abbiealbert wrote:

how to increase apple id limit on 1 phone

See the Related Article, linked above, for your options here.