In human nature accept the earth shape is flat since 5000 years.
No. Human thought the Earth shape was flat 5000 years ago until Aristotle and other great minds of ancient history came up with first idea of a proper scientific theory (they described what the theory should have and what's the proof) and concluded, based on simple observation, that the real shape is not what they thought.
When NASA need a lie then dubbed earth as round. We don't need to accept it.
But you can repeat simple measurements. You don't need to listen to NASA.
There are some shapes on the sky but we don't know what their shapes and are they real or some illusions.
Round, oval, rectangular, pyramidal, undefined etc. The only illusions we observe are due to light being tricky and bending slightly due to the force, whose name makes flat earthers sick. Unless you prefer not knowing what's happening.
We have only some NASA lies on our hand.
If it is what you believe, than I'm sorry for you.
We have no any true theory about the shapes on the sky. All lie, everything is lie. We don't need to believe these lies.
We have plenty theories and actual observations. You just decide to ignore them as an actual evidence.
You can believe anything you want. But if you have an evidence, it's no longer believing, it's accepting it as real fact.
And as someone clever said: just because you don't understand something, it doesn't mean it's false.