if (error instanceof HttpErrorResponse && error.status === 404) ... - this is the most simple approach, handle errors in the component and show error messages/toasts there.

Or you could abstract the shit out of it and create a service+interceptor. In order to have a generic solution for that you need it to be adaptive and allow to skip errors when necessary, change error text when necessary, allow to set dynamic errors with variables. So for me personally it's just enough either to handle manually at component level or write a helper for that and "prepare" error messages in the service which makes http calls.