Build me a flyer

I am looking for help to build a flyer I can share on social media and also use to advertise with. I don’t know anything about making a flyer or adds. I own an odor removal business and have always been contracted with private businesses, but we are moving into the public sector of it and want to start advertising. I have all the info I need on the adds but don’t know how to make it look good or create one.