Hi chiquita_norita,
Thank you for giving us the chance to assist you with your Mac. You can count on us to do our best to assist you or get you pointed in the right direction.
We understand that you are experiencing issues deleting an app. Are you using the same steps in the article below?
How to delete apps on your Mac
If yes, we recommend that you check if the issue persists while on safe mode. Below is an article to help guide you through the process.
How to use safe mode on your Mac
Also, have you had the chance to check if the persists on a different user account? The article below can help if you do not have any other user account to test with.
Set up users, guests, and groups on Mac
Please keep us posted.
Cheers!