BTC is suffering something very strange. I mean, can someone explain, please, what is going on with the price that stuck between 450-500 USD; is ithis normal or is jut me making a scene?
Btc is not "suffering", it's not strange, nothing is wrong and you
are making a scene

The hodl propaganda says every year the price will at least double and we are going nowhere but to the moon and to conquer the world.
Don't blame him or others if they feel shoked when the reality makes things seems different. Some people sell too optimistic expectations, and some people buy them.
Honestly, Just hold. Seriously, just hold. And then when the price changes, just hold. The simplest argument is this:
1. Do you believe that the USD/EUR/Rubles/Yuan etc will be printed/created by their respective central banks at will? If yes, evaluate #2
2. When supply greatly increases, do you believe value/price decreases? If you believe yes, then evaluate #3
3. Do you believe that Bitcoin has a fixed supply? If yes go to #4
4. THEN the USD/EUR/Rubles/Yuan will all decrease in value compared to bitcoins and thus the amount of USD/EUR/Rubles/Yuan etc to purchase a bitcoin will INCREASE (bitcoin price will go up)
Obviously there are more perspectives that need to be looked at, and you have to include the possibility of the world banning bitcoin or the internet being taken offline etc etc. But overall if you stick with AVERAGES and no radical changes, bitcoin price should always increase when being compared to a fiat currency that is printed without limits.