If you want to be investing in Bitcoin, gold, stock or real estate that you will not get profit immediately you need to have a discretionary fund. Example is if anybody's total income equals to their basic or necessary expenses they should forget about investment. There is most likelihood that they will sell their assets prematurely to take care of their basic needs which are essential.
If you want to invest in a long term profitable asset and you don't have a discretionary fund you can do the following. Cutdown on your basic expenses if you can, get a better paying job, get a side hustle, learn profitable skills, do what you can to earn more than your basic expenses.
To build better financial strength when we're not yet at a sufficient level, it's best to choose one of the options mentioned. This aims to focus on managing it effectively. There's a term for living a more frugal life, where we focus more on implementing investments more consistently. If our expenses are low, we can increase our investment portion. Earning more money may make it much easier for us to start investing, and we can find other sources of income from work based on our skills.
There's no need to feel embarrassed about holding back in order to achieve financial well-being, as successful people who started small typically don't prioritize luxury when spending their money on living expenses. When we're building financial strength, there are many things we need to hold back on or avoid buying, realizing that buying unproductive items won't provide financial benefits.