Calibrating Dell S2716DG

[BeadyRoller]

Hi, so bought this monitor last week and having a hard time finding the best settings and calibrating it, I have followed someone else's on YouTube but doesn't look quite right to me and is to dark.

Any other people using this monitor and feel they've got their colours just right? Would appreciate the help. I'm useless at this sort of thing haha.

Thanks.