Who can help me? I will leave my home country and travel. I will do freelance work. Where do I have to pay taxes?
Who has experience with it?
You really need to speak with your accountant and your tax authorities.
There are different regulations in every country, resident, non resident taxes, where are your clients based etc. It will depend on many factors how you will pay your taxes in this case and no one in this forum will be able to give you complete information.