Traveling Thailand in July

Hi everyone!

I will be going to Thailand at the beginning of July and leave around the 22nd. I am going to arrive and leave from Bangkok.

It is my first time in Thailand and originally I was planing to come with friends but they jumped off. So now I am going to travel alone and don't have any real plans.

Probably I am going to meet people anyway and just go with the flow. I don't want to stay in Bangkok the full time, I am thinking to go south and see what happens.

Do you have any tips and highlights for me though, which I must see? I'm thinking about spending 1000€ for the 3 weeks but have some air up.

I love Techno music and nature!