Right now it's really hard for Bitcoin to get back to $20,000, logically it can go down from its current price, but not go back to ATH 2017. Now there is much more money invested, more international interest, it appears more in all the news than it appeared in 2017, there is also a lot of institutional money in Bitcoin, there are even some countries (2 that I know of) that are investing state money in setting up their own Bitcoin miners. So the general interest has grown a lot, I do not think it will return to the previous price you have indicated.