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Any trading requires knowledge, so here if we want to invest in Bitcoin, we must gather our knowledge in different ways. Because according to DCA strategy we need to invest Bitcoin once every week or once a month according to our source of income. And not every time a small amount of assets from an exchange can be stored in one's wallet, a small amount of assets per week or month for a long time can be hundreds of dollars. Big sellers may not contact you as per regular DCA strategy (since you are a small investor) in which case you will have to wait for a long time and turn several hundreds of dollars. This way you can own a large amount of wealth at one time but have to invest regularly.
I'm not sure whether you really understand the DCA strategy well or not. But be aware, DCA is a strategy that requires you to divide your investment budget into several parts; for example into 3 parts. It's up to you whether you want to use 50% of your budget on your first purchase and use the other 25% on your second and third purchases, meaning you can still adjust it yourself.
The best investment goal to consider is not getting rich. However, you have to think wisely about what your main purpose of investing is, for example as a provision for life in old age or for your child's education costs for the next 10 or 15 years. We will never get rich just by investing $1k to $10k today, but if you want to be rich then invest more. But it is good if you have a wiser plan about what your investment goals in bitcoin are instead of getting rich.