And suddenly the planets get sucked into some wormhole and I swim away like Nautilus.

the next user is past the event horizon of a black hole.

But it is the future, and I have FTL technology.

The next user dies of old age in the present (so no future stuff)

But this the present day of a fantasy world. I get resurected and go ride unicorns over rainbows.

The next user gets gored by a bull travelling at MACH-5.

However, the bull encounters an extreme amount of heat due to the air resistance at mach 5 and instantly ionizes into plasma.

The next user was the bull.

I keep going as a ionized bull made of plasma and crash into @belugawhale, going straight thru him, along with melting the surroundings.

Next user is right next to the big bang as it explodes.

I am the Big Bang itself. I rapidly expand and become the universe. Side note: there was no "next to the Big Bang", for it happened everywhere simultaneously.

The next user is trapped at the moment of Heat Death at the end of the universe. You have no ability to teleport, time travel, etc. In addition, there are no wormhole or black holes remaining.

Since we have pretty much no idea what happens after the Heat Death, let's just say I get teleported to another bubble universe.

The next user is the last cookie in the cookie jar at a children's party.

I was for some reason wearing full kevlar and a ballisitc helmet. All the bullets bounced right off.

The next user has a huge 100000 ton titanium weight dropped right on their head.