CSS takes a bit of time to understand. It's cascading nature and how certain properties behave differently based on the html structure or display type or direction makes it tricky. I don't blame you sticking with tables for layouts for yourself - making layouts with floats was a pain. Bootstrap hid a lot of the layout pain. But today we have flex and grid to help us realize our layouts.
Well, OOTB, yeah. I personally like to make use of custom html elements a lot of the time for such things. Such as <main-header> <main-footer> <main-content> <content-header> etc, and apply css styles to those, rather than putting in classes onto divs. Feels a lot more ergonomic to me. Also gives more meaningful markup in the html. (and forces me to name the actual tags so I use much less unnecessary ones)
https://l-wortley0811-dp.blogspot.com/2010/10/comic-layoutsj...
CSS grid is a powerful layout tool. If you think CSS sucks I encourage you to brush up on the newer developments. Flex box and grid and many other newer tools solve a lot of the classic pain points with CSS and make it a pleasure to use if you invest the time to learn it