I believe some formatters have an option where you can specify a "do not reformat" block (or override formatting settings) via specific comments. As an exception, I'm okay with that. Most code (but I'm thinking business applications, not kernel drivers) benefits from default code formatting rules though.
And sometimes, if the code doesn't look good after automatic formatting, the code itself needs to be fixed. I'm specifically thinking about e.g. long or nested ternary statements; as soon as the auto formatter spreads it over multiple lines, you should probably refactor it.
I'm used to things like `// clang-format off` and on pairs to bracket such blocks, and adding empty trailing `//` comments to prevent re-flowing, and I use them when I must.
This was more about lamenting the need for such things. Clang-format can already somewhat tabularize code by aligning equals signs in consecutive cases. I was just wishing it had an option to detect and align other kinds of code to make or keep it more table like. (Destroying table-like structuring being the main places I tend to disagree with its formatting.)
And sometimes, if the code doesn't look good after automatic formatting, the code itself needs to be fixed. I'm specifically thinking about e.g. long or nested ternary statements; as soon as the auto formatter spreads it over multiple lines, you should probably refactor it.