My head is swirling with all the coins coming out these days. Have these coins all been around for some time or am I just hearing about them now? I don’t know

My head is swirling with all the coins coming out these days. Have these coins all been around for some time or am I just hearing about them now? I don’t know how this crypto shit will ever end. It’s basically speculation that there will always be a greater fool to buy your coin. Zero fundamentals. Can this really go on forever? Or will there be an ultimate bag holder at some point?