How do i ask the beggers nicely to leave me alone? They get real mad when i say no.that makes me nervous.

Invest in some Mace or something

Tell them if they ask again you will take all the money they have and call t be cops

Don't make eye contact in the 1st place. Look away before they approach you.

Be quick and authoritative with "no". Don't hesitate they want to make you uncomfortable. There professional at what they're doing. If someone does bother you to much just call Cleveland police. They will chase them out of there.