What is bitcoin Halving and how it can impact Crypto Market?

Miners receive reward from each new block. The initial Bitcoin block reward was 50 BTC.
Now, it is 6.25 BTC and after the next halving the block reward will be 3.125 BTC.

Less reward, potentially less coins for sell on the market (because miners usually sell some part to cover there running costs)
And this may lead to price increases...

But this is in theory, in reality BTC is highly manipulative asset ruled by cartel. Because of this price and impact on crypto market is unpredictable.