Hi Michael,
I hope you are well today and thank you for your question.
You can try achieving this by using the solution posted in the following topics.
You can try removing default copyright text by adding the following CSS code in the Custom CSS option of your theme on the below path.
Admin Area -> Appearance -> Customize -> Shapely Options -> Other
.footer-credits {
display: none;
}
Then add your own as described in the following topic.
https://colorlibsupport.com/t/copyright-message/
Best Regards,
Movin