Wordpress Elementor Mobile Responsiveness for a small site

I need help fixing mobile and tablet responsiveness on my WordPress website built with Elementor.

- Fix layout issues on 3–4 pages
- Mobile + tablet only
- Desktop should not be changed

Work mainly inside Elementor
- Small CSS tweaks are fine if needed
- Keep the existing design and style
- Desktop layout must remain untouched

Pages fully responsive on mobile and tablet

I can provide WordPress + Elementor access and page links.