There has been three bitcoin halving. After each halving, bullrun followed it. With how the price of bitcoin has been increasing, it is evident that only reducing mining reward can not do it, increasing demand is another reason. The mining reward is reducing, but the reward is still adding to the circulating supply and the effect is reduction in price, but in a way that it is not significant. The demand will increase the marketcap and increase in the marketcap means increase in the price of bitcoin.
Right now, I've already halved twice, and third next year. In the first halving year of 2017, I experienced a profit there somehow, but in 2021, I was not able to keep up and set aside because at this time we were still in recovery from the pandemic era.
I hope this upcoming halving I will experience a good profit again, although I am already accumulating cryptos, which I think can also follow the rise in the value of Bitcoin to be honest, and I can still accumulate via dca just like some people do here anyway.