Exclude wallpaper from home

Hello everybody,

can someone tell me how I can exclude the background image, which I have set in the theme customizer, from the start page?

I have used the elemntor plugin to display text in columns.
Due to the background image, the start page is no longer legible.
On the remaining pages, the text is ideally on a white background.

The site is: http://wordpress.svi-mountainbiketreff.de/

Thank you!

Solved it by changing background color in elementor content.
But while loading the page the background picture appears shortly.