Example section to archieve the effect of a changing background. Keep in mind I removed the test domain. So you need to upload an image in the section background overlay, and change 2 url's in the section custom css.

elementor-code.html

<script defer>
document.addEventListener('DOMContentLoaded', ()=>{
	jQuery(($) => {
		const container_blocks = document.querySelectorAll('.dynamic-blocks')
		if(container_blocks.length>0){
			container_blocks.forEach(container=>{
				const blocks = container.querySelectorAll('.dynamic-block')
				blocks.forEach(block=>{
					block.addEventListener('mouseover', ()=>{
						block.parentElement.querySelector('.active').classList.remove('active')
						block.classList.add('active')
					})
				})
			})
		}
	})
})
</script>

template.json

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center","background_overlay_size":"cover","background_overlay_opacity":{"unit":"px","size":0.41,"sizes":[]},"overlay_blend_mode":"multiply","css_classes":"dynamic-blocks","jet_parallax_layout_list":[],"custom_css":"selector:has(#lorem2.active):before {\n    background-image: url('https:\/\/domain.ext\/wp-content\/uploads\/2024\/01\/taylor-wright-s8Yz0dqKrVI-unsplash.jpg');\n}\nselector:has(#lorem3.active):before {\n    background-image: url('https:\/\/domain.ext\/wp-content\/uploads\/2024\/01\/ahmad-odeh-KHipnBn7sdY-unsplash.jpg');\n}\n\nselector, selector * {\n    transition: all .2s ease;\n}\nselector .dynamic-block {\n    cursor: pointer;\n}\nselector .active {\n    background: white;\n}\nselector .active * {\n    color: black !important;\n}\nselector .active a {\n    border-color: black !important;\n}"},"elements":[{"id":"1cad9cfe","settings":{"border_border":"solid","border_width":{"unit":"px","top":"1","right":"0","bottom":"0","left":"0","isLinked":false},"padding":{"unit":"px","top":"40","right":"20","bottom":"40","left":"20","isLinked":false},"_element_id":"lorem1","css_classes":"dynamic-block active","jet_parallax_layout_list":[],"__globals__":{"border_color":"globals\/colors?id=039a972"}},"elements":[{"id":"525b0781","settings":{"title":"Lorem ipsum dolor","title_color":"#FFFFFF","typography_typography":"custom","typography_font_family":"Montserrat","__globals__":{"title_color":""}},"elements":[],"isInner":false,"widgetType":"heading","elType":"widget"},{"id":"2087ccb","settings":{"text_color":"#FFFFFF","typography_typography":"custom","typography_font_family":"Montserrat"},"elements":[],"isInner":false,"widgetType":"text-editor","elType":"widget"},{"id":"9c7d5bf","settings":{"text":"Lorem 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