Solo trip. Coz travelling solo will help you explore more and you will not only explore the place but also the people you will get to know more about their culture and vibe.
Solo riding with planning don't forget to carry go pro or dslr, cause uh will know about yourself moreover. You will easily engage with locallie people where ever uh are.
If it's about now then trip with frnds ( much needed!!)
But otherwise a solo trip is a must in the entire lifetime
You get to know so much about yourself its just a blissful experience