Are you thinking of setting up a charity?
There are various ways to contribute your money, time and effort to the community, for instance through making a donation, volunteering with existing charities, or even setting up a charity.
You might like to start by browsing through the list of existing charities to find out if there are others who are already doing what you have in mind.
Do also consider collaborating with an existing charity to achieve similar charitable purposes as this could help to reduce your administrative overheads.