Hello there, this is Emily.
Because you want to keep both of your files and your apps it would make better sense to move your data from the new user profile to the current admin account because this move cannot transfer apps it only transfers data.
First you want to remove your Microsoft accounts from both user profiles. Do this for both:
Settings > accounts > your info. Click on “sign in as a local user instead” and follow the prompt to set up the local username and password. Restart the computer after that. Log into your admin user profile. Go to Settings > accounts > your info. Click on “sign in with your Microsoft account” and follow the prompt to sign in with the new Microsoft account that has the paid OneDrive service. Restart your computer and now you have your old user profile linked to the new Microsoft email account instead. If you need to transfer any personal files from the new user profile to the admin to user profile you can go to the c:\users. Copy the files from the folder you want to transfer from and then paste it into the folder you want to transfer into. This step must be done while you are logging in as the admin users.
I hope this helps. Good luck!