You may sell your BTC during the bullish period of, which may be a sign of good business. Now you bought again at the time of low market, here you stayed with Bitcoin and increased the profit margin.
I know people who engaged in this practice and at first it looked like good business and easy money but as time progresses, they usually come back to face reality which is that they have ran out of Bitcoin or have their Bitcoin portfolio depleted with no way of accounting for the profits made. This happens in two ways, the first of it is that when they buy during bear market and sell during bull market, some usually keep this money in their bank or in stable coins and every now and then they will always see a need and will use part of the money to meet such needs.
A good investor will always know that his investment asset in not what he can use on other purpose, even the realized profits are expected to get back into the investment in other to have more chances on earning more from the additions in them, we have to maintain a unique kind of business model and this ethics is to maintain the boundary on what we use our intended investment fund for, we cannot do without attending to some needs as they may even come in urgent to us, the reason why we are expected of having alternative to our source of income, when we invest, we buy the dip, hold and when the market rise, then we sell, we do this over and over again.
It is not a wise way of investing, and such method of buying and selling over and over again will take your bitcoin investment portfolio to nowhere