How much do you estimate I will make?

Ok so I know I couldve invested when Bitcoin was cheaper so I feel like I am late to the party. However, I want to do something that is timeless. At the price of Bitcoin right now, I want invest $200 every Friday not for 5 years or ten but until Bitcoin reaches the 21 million dollars in price so I suspect it could be by 2045. I only own $30 but starting Friday I will buy $200 until then because my research says if Bitcoin reaches 21 million, then it means the world currency would be Bitcoin and all Fiat currency would be obsolete.thats not all. I am looking for some type of software/app that will notify me when Bitcoin drops significantly, and when that happens I want to put $1000 regardless. My problem, looking at reality in the broader sense, putting Bitcoin in a cold wallet although very secure, very risky too because hodl can be in an analogical sense be said to be, putting your money under your bed. If you lose your wallet and key, you lose your coins, nobody to refund your loss like a bank. My hopes are that technology will get better and cold wallets will get better. Maybe implant cold wallets in the brain, something like that. Because I doubt we can all hodl Bitcoin without risking losing it. If 1000 persons put their coins in a cold wallet, 100 of those 1000 will not lose it. It seems statistically impossible to assume everyone that hodls money in cold wallets will not lose it. It's just math. But let's suppose I do that, how much do you suspect, I will have ?