if you want to noodle around and enjoy that kind of thing you can try all kinds of strategies. Day trading is popular because its very exciting but making money day trading is hard. It's made harder if you factor in fees which add to what you have to make to actually turn a profit when looking for relatively small profits throughout your day.
If you want to consistently make money do what the professionals do. Trend follow with risk management that cuts volatility. So for instance. If you bought BTC in Oct 2020 at $20k and held onto it through all the ups ($65K-May 2021) and downs (it's been as low at $29k since then) The value of your portfolio fluctuates accordingly. A professional will use volatility avoidance software that buys while the market trends and transfers into fiat when the market starts ranging like May 2021 until now.
This website CyberTools.Club allows access to professional risk management software. Does not take custody of funds, just connects to your exchange and trades on your behalf. You can see
some research papers on this page which show the difference between buy and hold with no risk management or buy and hold with risk management. It's not sexy or fun but over the long-term its a strategy with a good probability of success and because membership building is a priority at the moment the service has no fee.