For men who have the means to do it, serial monogamy is the preferred lifestyle. But don't leave destruction in your wake; separate amicably and fairly. For Democrats (who don't actually believe in marriage) to criticize Trump's marital lifestyle is just another manifestation of TDS.
Nothing in the Bible demands that GOVERNMENTS feed the poor, house the homeless, care for the sick, etc. It is only moral phonies who vote for socialist candidates and believe that they are being "charitable" by demanding that these worthy tasks be done with OPM.
Nothing in the Bible even suggests that sovereign nations have an obligation to admit outsiders who reject their core values (NOTE: Democrats have no core values), hate their customs, and intend to live in their own bubbles with similarly displaced people. Rejecting them is appropriate. Getting rid of the trouble-makers is an imperative. Diversity is NOT a strength; unity is a strength.
Married 52+ years, I have nothing to advise the OP. He seems to be young enough to start a new life, which is all one can ask for. It's better for a man than a woman; that much is clear.