Earning over 200K. Can I contribute to a RothIRA?

Hi all,

Very grateful to be in a position to earn 200K annually. I’m wondering if I can contribute to a Roth IRA, how much I can contribute to a Roth IRA? I’ve also heard about this magical back-door Roth IRA, but I haven’t done much research into that. Thank you!

Also, my current employer does not contribute or match my 401K, but I still max it out.