I cannot put any money at all into a Roth IRA, despite making a decent but non-astounding IT salary (below the caps), because I'm an American living abroad who

I cannot put any money at all into a Roth IRA, despite making a decent but non-astounding IT salary (below the caps), because I'm an American living abroad who had the temerity to marry a foreigner and am stuck in "married, filing separately". I cannot use similar retirement plans in the country I live in, because no brokerage here wants to deal with non-rich people who are US citizens or have US income tax obligations (why I do not file jointly - at least one of us needs to be able to keep paying into a retirement account here!) Words cannot express my contempt for Thiel, who is apparently still a citizen of the country I live in. I'm pulling for the Finanzamt, however they can swing it.