Things that aren't "can't focus" that are symptoms of ADHD:
- bad temper - speaking before thinking (followed by immediate regret) - often making spur of the moment decisions without thinking of long-term consequences
The overarching thing being that lots of people with ADHD do things _despite knowing on a rational level that it's not a good idea_, because that thought usually isn't loud enough to actually stop your actions (at least not fast enough anyways).
There's always a bit of "yeah everyone has that" when you talk about laziness and lack of focus, making it feel a bit like an unfalsifiable diagnosis. But there's a lot of people who most definitely don't have bad temper issues or go binge drinking all the time (Though this isn't everyone with ADHD either of course).