Hello! My name is Abdullah, and I will assist you today.
I am sorry to know that you are experiencing this issue. Normally, if you would like the OneDrive should be syncing all of your files automatically and keep them uploaded to the cloud, let it be Enabled on the startup. If you have disabled it on the startup, you can open it by opening it from the Start, type OneDrive and open it.
Thank you.
Best,
Abdullah