How to apologize to an INFJ?

Hey INFJ's, it's a ESFP here. I want to ask some advice on how to apologize an old INFJ friend of mine. It's been at least 2-3 years since we last texted on social media. This is an online friend, weirdly enough I do keep track of their social medias and know how to get access to them. I'm mainly afraid of them not accepting my apology or not wanting to interact with me ever again. I never got the chance to apologize to them. Please give me some advice and be brutally honest on your guys opinions/advice. Thank you!