I was like you and didn’t install any of the messenger, because I didn’t want to give all thos companies all my data. Luckily I only had to wait for about 5 days after my FP2 arrived to get root. By now we even made a wiki article with detailed instructions here: https://forum.fairphone.com/t/pencil2-howto-root-with-superuser/12375
Just follow the B) variant and you’ll have a rooted FP2 in about 15 minutes 
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