Please increase my storage

Here is how to purchase more iCloud storage:

Buy more iCloud storage - Apple Support

There is no means to increase the amount of internal storage available within an iPhone. Replacement is the only option, and off-loading some part of the current contents of the available iPhone storage to iCloud or otherwise is the only workaround.

On your iPhone? You will either have to delete some apps, photos, etc. to create more storage or buy a phone with more storage?

iCloud storage? Go here > Manage your iCloud storage - Apple Support

Keep in mind that adding iCloud Storage does not add any additional storage to your iPhone.

If you need more space on your phone, you will need to delete something. The storage space cannot be increased.