No, he does not care at all. Biden said lots of times, he fully supports Israel. When someone says that while the particular state is committing genocide - the person truly does not care about the lives of the people who are being brutally murdered.
At some point the geopolitics and internal US politics needs to setback and you need to take a hard look and think about the more than 33 000 lives that have been taken away.
This is not about “doing anything he wants just because, he’s president”. Despite the fact Biden cannot do ‘everything he wants’ - he certainly has a great influence of what happens (he’s president after all). The US refused to agree to a ceasefire multiple times.
He could for example put pressure on not giving the money to Israel until ceasefire happens and pressure to not give any weapons and such if they (Israel) decide to continue.
Also this is just me probably nitpicking but why can’t you write without rude words?