Do you think that the need to increase BTC's max supply will arise in the future? Or will Bitcoin be able to "live" just fine with a max supply of 21 million coins? Your input will be greatly appreciated.

I think for now, the amount of Bitcoin that is available can cover all transactions every day? I am not sure in the future Bitcoin will be increased to the max supply. In numbers, 21 million Bitcoin cannot cover billions of human transactions. However, we do know that Bitcoin transactions can be further divided into 'satoshi' parts. Suppose a person wants to buy an item that costs 10000sats or 0.0001 BTC.
Therefore, even though the number of Bitcoin is limited, the BTC transaction system can be divided. And that's the advantage Bitcoin can cover its limited amount. Ja