What you just explain OP can not possible 1million naira is about $700 while 200 thansand naira is just $130 the dump gap is much Bitcoin is not like shitcoins that will suddenly drop to zero from hero, it also seems to that you have no basic knowledge about Bitcoin investment, Bitcoin investment is not a Ponzi scheme that you will Invest with $10 and suddenly expect $100 worth of value in the next day no bitcoin is a long time project that you don't even need to panic when experiencing some decline in the market if your plans is to hold for long, Bitcoin is a volatile asset it goes up and down and appreciate in value as time goes on Bitcoin is currently doing well now so your focus shouldn't be in the market price rather your focus should be on how you can be accumulating more Bitcoin and HODL.
Bitcoin investment should be done with our discretionary income that's our leftover income money we can actually let go or money we can afford to loss with the DCA strategy you can start accumulating Bitcoin gradually and hodl for the future.
You have spoken like a legend by hitting key points and making numerous clerification to the level of a lay man understanding, however, many folks think bitcoin investment is a quick one that they can just jumb in and hitting it big without passing through the due processes of patients and consistent accumulation.
One thing is certain, provided what is been invested is what you can afford to lost in other words discretionary funds no matter how deep bitcoin drops you have no reason to panic.