Yes but buying big in April 2020 was pure luck on my part: The stock market had already recovered somewhat from an earlier crash, but I feared that a bigger, longer-lasting crash might be just ahead, and I agonized over whether to simply keep my money invested in the money market (<1% returns), but eventually decided that I didn't have a clue how to know when it was the "right" time to buy, just as I don't know if now is a good time to sell.
That was very good timing, good for you. As you said, pure luck (and big cojones).
When I think back to April 2020, when you bought big, CV was largely an unknown factor, no cure/vaccine in sight, job losses mounting, governments clueless, healthcare institutions bumbling, global death rates horrifying. My decision to "sit tight" back then seems logical. But in hindsight of course, very very wrong.