Volunteering should be good for your wellbeing.
You might not enjoy volunteering anymore. You might want to stop.
If you are not happy, talk things over with your friends and family to see what the problem is.
It might be that something has changed in your life and you find it hard to carry on volunteering.
It could be a change of manager. Or an argument with another volunteer.
If it is a problem with another volunteer, ask for a meeting with your manager.
They should help you sort it out.
It might be that you have been volunteering in the same place for a long time and you want to try something new.
Do not just walk away!
Talk to your manager. They are here to help you.