I also have issue with taking right decision when buying coin. During this dip, I bought some matrix tokens at $0.3 and just a week after, the token I bought at $0.3 dropped to $0.18 then I began to blame myself that I should have waited. In conclusion, its not possible to get the best time to buy a coin because no one knows when the price fall will stop.
true, there's tools you can use like technical analysis to give a better chance of buying at support levels, but when the whales want the price to drop, nothing can stop them