Hi, I am Dave, I will help you with this.
Any cloud service you use if you require 1TB of space is not going to be free, you will have to pay a subscription
For example, OneDrive comes pre-installed n Windows, but if you need 1TB of space, the cheapest option would be to get a subscription to Microsoft 365 (Office) and you would get all the Microsoft Office apps and also 1TB of storage on OneDrive.
Otherwise, there are plenty of other cloud services like Dropbox.. etc. but I am not sure of how much 1Tb of space will cost on them, you would need to Google that to find the best option that suits your needs.