So much depends on the size of the city. We have numerous food pantries looking for help and two huge food distribution centers. One has a volunteer crew of around 60+. If you enjoy the elderly, various forms of nursing homes need volunteers for companionship and such. Go to admin and talk to the higher up staff at the homes and schools regarding mentoring. Here in Indiana, we have CASA who a individuals assigned to children at risk to help them thru the process. They get loads of training. https://casaforchildren.org/

Meals on Wheels is a very valuable organization too.

Note: many organizations are not as welcoming to volunteers because it takes a lot of time from staff to manage programs with volunteers (even one volunteer).