Ref :

https://support.loom.com/hc/en-us/articles/360002208317-How-to-embed-your-video-into-a-webpage-

You can hide the title and subtitle on your embedded video by appending the video’s embed code using the text below. 

• ?hide_owner=true
• ?hide_share=true
• ?hide_title=true
• ?hideEmbedTopBar=true

To hide multiple elements, use the ? for the first element and & after, so your URL looks like https://www.loom.com/embed/e5b8c04bca094dd8a5507925ab887002?hide_owner=true&hide_share=true&hide_title=true&hideEmbedTopBar=true.