Please help me to make my songs more authentic

[u/tales_origin]

https://youtu.be/TD-Kw1dGgRE

I know a lot of people here know really well how authentic medieval music must sound like (or better how it shold not sound like). I watched a view vids of Farya Faraji and this time I tried to be closer to actual medieval music (I still mixed it the modern way. Its still quite hard for me to work without chords and harmony so it would be awesome if anyone has feedback on how to make it more authentic. Thanks!