WordPress website buggy at the beginning (elementor pro)

Can someone help me to debbug this behaivor ?
Whenever i reload this page the header goes down and then to the position where it should stay.
I think it might be because of lazy loading in the staff member carousel or the plugin for the google feedback section.
And another question, what would u change in general ?
My client wanted to display all his services on the front page and didnt want subpages. He didnt like cards because it would be 10 cards and thats too much.
The compromiss he made is 2 carousels 1 for fitness and one for wellness next to eachother but that doesnt really look nice in my opinion.

I usually do Web Development, its not a complex Website but cant change the code 1000x until he likes it so i used elementor pro even it doesnt has the best performance.


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