If you are Looking for what like happen in 2017-2018 then I'm telling you this is far different from those year.

Back in 2018 The Bitcoin Price starts to Fall right after the ATH in the near end of 2017 and that same year the value falls down up to January 2018 when the ALT starts functioning growth.

But now ? Maybe there are altcoin that may Have a Big Growth but i believe that Bitcoin investors will remain as is , so the chance of gaining from altcoin part is too little chance.