I've known Bitcoin since 2012 but started using it in 2019, though it was still for payments (funding and withdrawal) of online Forex trading, nothing more because I was careful to deal with something that might aid illegality. I later discovered that I was naive at that time, the latest development/revolution in Bitcoin made me ever feel bad and I had lost a lot of opportunities in the past to this.
When you have seen and feel that you are losing a lot of your assets on Forex why do you continue, you should think about looking for another trade and move your assets there, that way you will not lose a lot of assets that you had in that time. Never blame Bitcoin for the risk you get at that time, because it is purely your own fault, before investing you should see and understand which market is good to invest in Bitcoin.
The OP never said he lost a lot of assets on forex trading rather the OP uses bitcoin for funding of forex account as well as withdrawal but instead of investing the profits earned in bitcoin, the OP was very sceptical of illegality of bitcoin that time, that was the regrets, there are other categories of investors who doubted the credibility of bitcoin that time, it was after the 2017 ATH that was when investors and other crypto enthusiast who ought to have invested in bitcoin then but shun it started to regret about there sad experiences of having that opportunity of investing in it earlier.