Hi, and welcome to the Apple (user-to-user) Community!
Am no expert in this area, yet your request certainly deserves some response:
Re: How can I send all my Photos/Videos to iCloud
Seems iCloud is mainly for sync. of data across devices. ie: data synced from Mac to iCloud can be shared via sync to iPhone and devices using the same Apple ID.
(Also: It is necessary to always have up-to-date software for iCloud use.)
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Important: If you delete data from a device, that data deletes from everywhere the data is in sync., ie: same as when you add data, it's available everywhere in sync.
(Data deleted in error may be restored from "Recently Deleted" within 30 days only.)
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You can: Change which apps sync and store data with iCloud - Apple
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iCloud can store iPhone back-ups. Eg: Back-ups are retrievable through restoring the Phone from the back-up, to the state it was in at the time of the back-up.
The back-up may be used as the data on another iPhone with the same Apple ID.
How to back up your iPhone or iPad with iCloud
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If ever needed you can: Restore your iPhone, iPad, or iPod touch from a backup
or
Use iCloud to transfer data from your previous iOS or iPadOS device to your new iPhone, iPad, or iPod touch
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Re: However my idea was to upload both to iCloud and delete them from my phone.
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Please be aware! Seems iCloud can not store Photos and Videos that are not in sync on at least one computer or device. It is possible, however, to have high-res versions in iCloud, and low-res versions on your iPhone, saving some storage space on iPhone. (High-res versions may be download to iPhone as required.)
See: Manage your photo and video storage - Apple Support
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Re: the phone is about .01 left in storage.
I recorded two videos for YouTube and only the 2 min one uploaded
An iPhone generally needs around 8Gb memory / storage in which to operate smoothly. See: If you need more space for an update on your iPhone, iPad or iPod touch - Apple Support
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Re: What are my options?
It is wise, whether synced to iCloud or not, to store / back-up, / archive / valuable or precious photo and video data separately. Eg: Back up from iPhone using a computer to an external hard-drive for safe-keeping, and / or, if you wish, use a partition or another hard-drive for extra storage.
Backup methods for iPhone, iPad, and iPod touch
and how to:
Archive or make copies of the information you store in iCloud - Apple Support
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Resource: iCloud.com User Guide for iPhone
Eg: from above guide: Use iCloud Photos on iCloud.com - Apple Support
All the best :-)
