I want price of Bitcoin to reduce so i can start my investment, anyone knows when the price of Bitcoin will fall so i can begin.
You need to learn Bitcoin. Know the halving and Bitcoin cycle (bullish and bearish market cycles). With this understanding, you can know how to buy when the bearish season is ending or at the beginning of the bullish season. And sure, unlike some bigots who mislead others to buy at any time (even at peak levels), you are wise to wait to buy Bitcoin at a cheaper price.
I did not take my opportunity when i was introduced to Bitcoin and this forum, what should be done to correct my mistakes or am i late?
Forget the past, you can't undo it, just follow the above advice to still earn from Bitcoin.