Storage

Try to free up iPhone device storage see this Apple articles below:

If you need more space for an update on your iPhone, iPad, or iPod touch

If you need more space for an update on your iPhone, iPad, or iPod touch - Apple Support

How to check the storage on your iPhone, iPad and iPod touch

How to check the storage on your iPhone, iPad and iPod touch – Apple Support (UK)

Clear Other storage on your iPhone or iPad

Clear Other storage on your iPhone or iPad - Apple Support

What's the difference between device storage and iCloud storage?

What's the difference between device storage and iCloud storage? - Apple Support

I jus purchased more storage,

That is iCloud+

Sign in and use iCloud.com

Sign in and use iCloud.com – Apple Support (UK)

How to use iCloud on iPhone

How to use iCloud on iPhone – Apple Support (UK)

Manage your iCloud storage

Manage your iCloud storage - Apple Support