So i wanna try and get my girlfriend back what should i do?

i called my ex girlfriend private yesterday and left her a voicemail and i told her i was gonna call her or text her but i didnt but im too nervous too what should i do i need advice for real what should i do we have been broking up for 5 months i just want too ask her do she want me too leave her alone forever i asked her that one time before but she never answered the question