To be realistic? Bitcoin will definitely not do 5x in the near future. It will be long for us to see that because 5x means just about $350,000. If you’re looking to invest and get 5x, you should look at Altcoins. They are usually Altcoins that give even more than that, you just have to know which one. Most times it’s best to invest in multiple so you have profits from every possible angle.
It's not fair to blow your mind but a 5x increase in BTC long term is not a fantasy. Long-term holders are reaping the benefits of stash growth in the past. Holding investment in altcoins can pick high levels for short term. The meme has a lot of potential these days which has made many millionaires in the past. Even during BTC's bullish period other cryptos are likely to price higher in the same manner which makes optimism for alt investors.