Legal adult mad at a minor lies and stalk him

So, there's this 18-20 years old I found on Discord, basically he got mad at me for something so he started lying about my age and me, calling me p3 do phile and saying that I was like over 20 (I'm actually 16).

He also stalks my Reddit account and shares everything I upload here on Discord and in other places, he also shows himself regularly checking what time is for my country for some reason

To accuse me, he shows fake and edited messages I never sent or shows messages that I actually sent but that doesn't cause any concern since I'm a minor myself, and all of this is going on for like almost a month now.

He also told me to "slit" and other stuff.

His nickname is "Xynality", apparently he did much worse than this because with a simple research on Google you can find more concerning stuff about him, he probably lives in USA or Cali (I don't know, he claimed to live in different places)

Location: Discord