It's not just bad meetings, it's meetings that shouldn't exist in the first place.
Meeting can be useful, but I've worked at companies where meetings are (reasonably) well-run (minutes, chairs, time-capped, etc), but ultimately unnecessary in the first place. People leave with action items but feel as if the whole exercise could have been accomplished in half the time with only half the people in the room.
Or a quick email from one person to another.
In my trailing days at Amazon we had a project that was falling behind due to unforeseen team attrition. The more it fell behind the more meetings were called - one by each stakeholder - to discuss why the project was behind and what can be done to solve it. Ultimately this just meant more engineers in a room explaining things to a lineup of PMs rather than writing some damned code. A few months of this and I decided it was time for me to attrition out.
Before worrying about whether or not your meeting has an agenda, a chair, and set times, figure out if you need the meeting at all.