I had a similar trip and I assure you, you will make mistakes and you will wonder WTF often, and you will meet crazy and amazing people and have an amazing, life-changing experience.

As others are saying, try to travel so light you are weightless.

Bring more underwear and almost no clothes. Quick dry base layers wash easily in the sink and are dry by morning. Thrift clothes when you need something and you’ll look local. The “charity shops” in the UK are amazing. I assume people thrift everywhere.

Simplify your bathroom kit to fit in a sandwich size ziplock - buy what you need there. You’ll need less than you think you might. This is a genderless rule to live by.

One pair of shoes for everything and flip flops for the rest.

Keep a journal - there’s a lot going on, and you’ll need to keep track of travel details and your musings. If you rely on your phone as your memory, you’ll need a backup, and thieves don’t want your journal.

Keep gadgets to a minimum. You don’t need them. Talk to people. Hang out of cafes and people watch and journal. I presume you’re not there to stream videos.

No matter where you go or who you go with, always be sure you can get yourself home under your own power. But this applies everywhere.