how to put photos into your icloud

1.

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

2.

iCloud storage -> if turn iCloud On you get 5 GB free storage.

If you need more you can upgrade to iCloud+, see this Apple article: Upgrade to iCloud+

Upgrade to iCloud+ - Apple Support

See the following Apple articles:

Check your iCloud storage online or on any device

Check your iCloud storage online or on any device – Apple Support (UK)

iCloud Photos -> see the following Apple articles:

Get help with iCloud Photos

Get help with iCloud Photos - Apple Support

Set up and use iCloud Photos

Set up and use iCloud Photos - Apple Support (IN)

Access and view iCloud Photos on your iPhone, iPad or iPod touch

Access and view iCloud Photos on your iPhone, iPad or iPod touch – Apple Support (UK)