Help me or I'll an hero. I have am schizo btw.

Is this right? I am trying to get this right and to stop straying back to other theories and my delusions. I am a brainlet.

1.) We exist as separate, individual entities with our own separate individual consciousness.

2.) We are just a random cosmic "happening". We just happened to come into existence at some point in time. The universe just happened to begin at some point. There is no bigger reason. It just did.

3.) There may be other "universes" or "realities" with different laws of physics.

4.) After "I" die, I will most likely cease to exist forever and never return again.

5.) "I" am just a product of firing neurons in my brain.

6.) This existence is insignificant and meaningless.

7.) Everyone and everything there ever was or will be will cease to exist forever one day and nothing will ever exist again.

8.) The only objectively useful purpose in life is the pursuit of knowledge (or omniscience for humanity as a whole).

I need to know these are correct because I get existential OCD and delusions due to my schizophrenia.

If I am wrong about any of the above, please correct me.