What you say is a bit confusing.
3. Income tax
This will be my concern this time, whether all countries treat the same rules or not, I want to hear from all of you.
Income tax in my country in general will be very effective for employees of government agencies, offices and entrepreneurs. Let's say this, everyone earns whether it's from farming, freelancing, or any kind of work that isn't recorded at the tax office, if they don't report it to the tax authorities then they are exempt from tax.
No. If they do not report their taxes, they are breaking the law. If it were as you say, no self-employed person would declare them.
However, there is a provision that if someone has ever borrowed a large amount of money from a bank, even though the borrower was not notified by the taxpayer at first, in the end he was exposed to the taxpayer's accumulation of taxes over the years and he didn't know.
Make this clearer because it doesn't make sense.
I'm a little confused with this tax rule.
You don't have to swear. Maybe you should tell us where you live to see if we can clarify.