Investing in Bitcoin can be a complex and challenging endeavor. It's essential to approach it with caution, thoroughly understanding the risks and potential rewards, before investing in bitcoin first you have to define your investment objectives and time range of the investment, your investment strategy is it long term or short term are you investing to sell or to hold all these are considerations needed to be considered before investing
The last time I checked, bitcoin investment is very easy to start and not complicated and challenging to handle. Bitcoin investment can only be complicated and challenging to handle when you use the money that is meant to sort out your daily expenses and invest in bitcoin because at some point you will struggle to solve your daily expenses, which might cause you to sell your bitcoin even though you are at a loss to survive and get your daily expenses sorted out. But if you figure out you will have discretionary income and invest in bitcoin within your discretionary income, you will always find it easy to invest in bitcoin, which will allow you to hold your bitcoin for the long term because you will always be in the position of solving your daily expenses at any time they arise.
You are right anyone can invest in Bitcoin as long as they have a good understanding of how Bitcoin works and regarding the funds that will be used to invest in Bitcoin of course they must first settle their daily needs in order to run the investment properly and achieve the targets they set for themselves, as you said it is very true if someone is not able to meet their daily needs properly then it will be difficult to maintain the investment until the targets they set are achieved.
It is very important before deciding to invest in Bitcoin or anything else, we must first fulfill our daily needs and also have funds ready to invest without being disturbed by our needs.
You don't need to have a good understanding of how bitcoin works before you should start investing in bitcoin, because bitcoin itself is very complex and makes it impossible for a new beginner to have a grounded knowledge.
You only need to understand the basics of bitcoin, that's a long-term investment and you are to invest only with your discretionary income. After that you should know how to buy bitcoin from an exchange and figure out how much of your discretionary income you can use to buy bitcoin that's will enable you keep your regular weekly/monthly DCA ongoing for 4-10 years and above. You also need to set up an emergency funds if you don't have any. That can be done at the same time as you are investing. You share your discretionary income into two part, one for your regular DCA and the other to build your emergency funds simultaneously with your bitcoin investment.
Your emergency funds should be at least three months of your monthly income so that whenever any unforeseen circumstance arises during your bitcoin investment journey, you can get rid of it with your emergency funds.