I talk a lot with Swedes and Eastern Europeans about stuff like this, they approach it completely differently...
Which doesn't mean they know more ;)
I don't want to take sides here. The best way for many is probably a middle ground and a distribution of the available capital across the different opportunities.
But I do find it telling that just a few months ago from all directions (not just here in the forum) it was immediately shot out like from a gun "you have to invest your money in ETFs!! Best is MSCI World. Nothing can happen because it doesn't matter if individual stocks drop. The others will make it up!!" when it came to investing money. And suddenly you really don't hear anything more about such tips. :)
Sure... you invest in ETFs for the long term. Anyone who has been regularly investing in the MSCI World over several years is now laughing at the few percent drop.
But still: is not wrong. Especially with stocks, there are points in time when selling is not optimal. However, the follow-up financing is basically a fixed date.