No matter how hard you try, you can’t really be a “Modern Muslim” – which is an oxymoron. You’re not modern if you are looking to the past by seeking a 7th century moral lifestyle (Barbarians!?). This is because Islam didn’t bend or twist its rules or scriptures to change with the whims and desires of various societies, but this consistency of values is a strength, not a weakness.
The fact that we refer back to God and His Beloved Messenger (ﷺ) in helping us understand the difference between right and wrong helps us to remain consistent in our understanding, whilst the rest of society are like dry leaves blowing in the wind sometimes going this way and sometimes that way without steering any direction of their own; from Feudalism to Communism to Capitalism to not-yet-developed-ism.
So Muslims, be proud Barbarians! At least you’re more “civilised” than others.
As for the “modern” and “civilised” people, who look down upon traditional values of all sort, you might feel very safe and secure in the view that society ‘evolves’ or develops or improves over time, so it has emerged from the backwardness of the past and so now you have a more enlightened view of morals etc. The irony is that people 10, 50, or 100, or 200 years ago also would’ve thought they were living in modern times; the peak of civilisation, the pinnacle of humanity and that they had it all figured out too. People who think like that still continue to repeat the mistakes of the past and many of the old prejudices and wrongs in the world still exist, but they merely take another form. Perhaps, what you seek is already out there.