I have seen that after this Bitcoin halving, the price of Bitcoin has decreased a lot.
Do you want Bitcoin to continue to rise and never go down? If that is what is desired, then it will never happen given the normal ups and downs of movement.
The price after the halving is like the current market price is boring, but we will enter a new price history which will be the highest price above $100k.
Before the halving, Bitcoin had several times reached prices that exceeded the previous ATH. If you compare Bitcoin's current price of $63k with the price before the halving, I think the current conditions are still good.
Bitcoin is highly volatile so expect that it will never stay in a fixed price but will continue to fluctuate from time to time. I think that’s more than an asset for bitcoin that keeps the people from entering the market. So don’t put too much worries while seeing bitcoin price at a decreased price, it will eventually recover in time and even hit another price increase. Just be patient and learn to understand the nature of bitcoin. If you are in rush to get quick profits, then obviously you will fail on that as based on what I see, it may take couple of months first before we will see a good price increase.