I also think that Bitcoin can be bought in any case, since its price keeps increasing over time. You just need to recognize that such an investment may take time. The best way is to systematically set aside a part of your income each month to buy Bitcoin. I consider this kind of investment even better than a pension fund.
4 or 5 years, give or take, would be enough to see great results on any funds allocated to BTC and to its accumulation, imo.
But to hodl is to understand BTC and why we do it in the first place.