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.
Yes, right. BTC's movement is slow but sure and comfortable. If it's a meme, it's like a roller coaster is created once the pump is high enough and with a short duration. Likewise, when it reverses/dumps the price after the pump is also the same.
But strangely, many people enjoy it and even enter the same coin repeatedly, however. what you said above is also very relevant and you have to be careful in choosing them.