Hey there Scoggs58,
Thanks for reaching out.
While you're unable to downgrade software, unless using beta iOS, we'd like to help.
Depending on the overall health of the battery, there are ways to help improve battery life. Use the tips here next: Batteries - Maximizing Performance - Apple
Additionally, you'll want to check out the health of your battery, just in case this is causing unexpected issues. Look over the information for both "When batteries chemically age" and "Battery Health" in the link below to see if there's something going on with the battery, if there's more than normal app usage, or if this is expected: iPhone Battery and Performance - Apple Support
Take care!