Can I downgrade my subscription if it was not needed at the end of my tax information. I am not sure upgrading to self employment just to put expenses in will be worth it

To go back to a lower version or the Free Edition you can try to clear and start over https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-online/00/26444

Or you can switch to the Desktop CD/Download program.  You can use a lower version.   All the Desktop programs have the same forms. You just get more help and guidance in the higher versions.