Make yourself involve in crypto to know if its the right time to invest, and also if you say the bitcoin is a bubble well you must be new here. Also if its a bubble its the biggest bubble there is, investigate first before investing.
No one late here in crypto world, if you want to invest you just need a perfect timing, invest coins if it falls down deeply, if its at minimum price and hodl it, keep hodling until it rise, if it rise sell to earn profit.