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Retail investors can also survive bear markets, even if they last longer than usual, as long as they have a sound long-term holding plan. It all depends on each person's plan and strategy. But yes, as retail investors, we should have a strategy that suits our capital and position. It is not advisable to imitate or use the strategies of large companies, this is inappropriate and will lead to undesirable results.
In my opinion, DCA weekly/monthly, or buy whenever we have money regardless of price, or buy the DIP. All are true, and the important thing is that we just need to choose the strategy that suits our circumstances.
Whether it's DCA approach, buying dips or setting aside some fixed monthly budget, what is more important is to be consistent and disciplined. As an investor you need to understand the strategy that works for you in accordance with what you can afford and the level at which you can take risks because what works for Saylor and other big companies may not work for retail investors with small income, reason why we should all try to understand what works best for us and our own pockets. You can't just decide to start buying bitcoin even when it is at the top because you find bigger companies buying, that will be a very wrong strategy to adopt because he has access to resources and credit lines that me and you do not.