If the price of the Altcoin goes up, then the Bitcoin value will go up. The reason is that when the price of Bitcoin goes up, the price of Altcoin goes up as well.
If people start buying Altcoin more than today, the price of Bitcoin will go up as well.
If the price of Bitcoin goes up by 2021, it will be a record.
Am I right?
no
if price of Bitcoin goes up - and the price of altcoins relative to BTC stays the same, so the altcoins price in USD goes up
there is the game between this 3 prices that you can use for your own good if you understand it
or lose money while you think that you are gaining