So you want to multiaccount without getting caught?
I once survived to ~3000pp with ~9d playtime until some cunt on reddit reported me for "Blatant" without any research.
Here are the steps to survive without getting caught:
1) Create a new account
2) Play very easy maps and try to shake intensely during 2* or higher maps.
3) Try to press your keys softly like it's your first time, since first timers never smash their keys.
4) Don't play multiplayer or talk to people.
5) Getting 100pp on your account (not as a play) is normal in 4h, for example.
6) Play a few mods and suck at them, or pretend to be good at something like HD, since some people get used to it way early in the game.
7) In 2 weeks you could be able to sport a +30pp to +80pp play or higher (with DT or DTHR, that is, or maybe with HD, on Normal difficulties).
8) Don't talk to people until you got 600pp or more total.
9) Try to map, but feel like a beginner, even if you are, to show that you're just having fun with the game and trying out different things.
10) Beginners don't know how to use skins or download maps, but I was a beginner (real talk) that knew how to download maps and skins, so have little to only a few maps total, and maybe 1 to 2 skins, main a shitty skin or an older skin (2014 for example).