I'm sure the current conditions are different from 2018-2020, at that time there were many scam projects that cheated and immediately exchanged them for cash so that the price of bitcoin dropped, now bitcoin and cryptocurrencies have a strong foundation, namely devs. which is supported by large finances so that it will keep crypto prices afloat and will not drop again like 3 years ago.
Just considering the level of acceptance or adoption of bitcoin or crypto market as a whole then you could really tell that this is something different compared back in to the past which it isn't really right
to presume that we would really be seeing the same crash or price decline as of these years but well the probabilities would be always there because nothing is really guaranteed or can really be predicted.
This is why it would be much better that you should stick with your investment plans and goals or targets and wouldn't mind off about these events.