Why does the crypto community discuss Bitcoin halving roughly every four years?
Bitcoin adjusts its mining difficulty every 2016 blocks to keep the average block time at around 10 minutes.
When you hear people treat halving as a signal that prices will rise, think a step further: there are few historical examples to draw on, and many more variables affect the market.
The issuance of new coins for $BTC is written into the protocol; no institution can issue extra coins on a whim.
In what context did you come to understand this?

Just sharing some notes. Make your own decisions before taking action.