If at the time you mentioned you had enough opportunities to invest, you didn't take the risk to invest, then I think you did something wrong. Because if you had invested then you might have made a lot of profit from that investment now.  However, you may not have the courage to invest because you do not have a complete understanding of the market.  Didn't invest then but rightly regret it now. But there is no use in thinking about the past or regretting the past, we have to think and plan for the present and the future. So that after one to two years we don't have to say why we didn't invest in 2023.

The time to invest is not over yet, I believe that if you can invest now, you can definitely benefit from that investment in the future. Since you have made a mistake once, you can now take a decision or risk to invest. Hopefully investing now will not disappoint you.