Random recent example: Nike. Popping useless errors upon checkout in the webshop. Support: "oh, we're so sorry, just try the app, k bye".
Another example of major companies with broken websites more often than not: (European) airline booking websites.
And major companies think this is totally fine and doesn't damage their brand? I mean not being able to create a functioning website with unlimited funds in 2024 is not a bad look?!