To change your account to admin you have to log in with an admin account. Then you can change your account from there. Lots on the web about this so I'll skip any step by step here.
Forgot your admin password? No big deal today. Use the old UTILMAN.EXE tricks.
Read examples on the web like this one: https://www.isumsoft.com/windows-10/create-administrator-account-when-cant-sign-in-windows-10.html
I am unable to change my main account to an Admin account. The "Change Acct. Type" buttons grays out when I click on the Admin dot. I tried to search for this problem but the search function on this page isn't working.

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