Setup website

I've got multilingual website built with Joomla 4 + Evens Booking 4 (JoomDoantion) + Travelia template (Joomshaper). Main task is to make all this components work well. Right now main problem is with CSS and design. Some pages looks very bad, for example, heading of main page do not feet mobile phone screen, too many space between heading and sandwich menu, sandwich menu and social buttons menu not on the same position. Problem with "registration history" to, check the screenshots. I want you to go trough all pages and fix all CSS and related problems with page and components view on both, mobile and desktop. I can send you all files, or you can work on my server, as you prefer.