I don't like or recommend cases either. But like you, I tend to knock my MBA around too. I opted for a skin. I got this one: https://www.amazon.com/gp/product/B086V7FM3H/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

It came with top, bottom and keyboard skins, plus two screen protectors. I only used the top and bottom, threw the rest away. Price was good, so I don't mind not using those items.

The skins are nice, just a little dicey getting them aligned. But they provide good protection against scratches and bruises. But won't do anything major like a dent.

But to each his own...

Here is what I got for my M1 MacBook Air.

Keyboard Cover https://www.amazon.com/gp/product/B088H5ZFLN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Skin https://www.amazon.com/gp/product/B086V7FM3H/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Sleeve https://www.amazon.com/gp/product/B08GZZYT2Y/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1