Advice on poor communication with a manager

There's various methods you can use in an attempt to stop annoying your boss with questions (and I'm saying "your" in the generic sense, not your particular boss). Obviously, the source of the annoyance can vary between people and situations, but there's a few things you can do to help.

1. Pick your moments - This is easier in an office environment as you can see if your manager is free/relaxed. If they look stressed or busy, pick another moment. This is harder when your manager is on Teams/whatever, but you should be able to see their availability status.
2. Ask for a time slot - Instead of asking your question(s), say that you have some questions and ask your manager when they'll be available to run through them, don't expect them to drop everything and spare half an hour with you.
3. Group your questions up - Don't ask your manager questions one at a time, group them up into a related set of queries that you can form a conversation around.
4. Don't raise problems, bring solutions - A personal favourite of mine - if a problem occurs, do what you can to identify the problem, the cause, and the effect it's having. Also do what you can to identify a potential resolution. Your manager might know more than you about the issue, but will respect you for doing your groundwork.
5. Offer an exit plan - Say you have a problem about xyz and ask who would be best to ask about that. An answer saying "Talk to George" gives you a route to resolution and lets your manager get back to their day job.