Realizing your wishes and goals has been my meaning ever since someone asked me the first time. Making them happen and enjoy the process just as much, though that can be harder. Even when I was a Christian who prayed, Heaven or eternity wasn't on my mind ever, and that's the time I decided my meaning in a jiff.
Otherwise you can use scripture the way Satanists use theirs - without the supernatural element. I find much in the workings of nature (animals) compatible with Christianity and Satanism, though I'm not that either.
It's about finding beliefs that make everyday make sense whether it's a good or bad day. Like looking back at when you were last ill, and think "Hell, I was really ill ouch, but that past, just like next time I'm ill, which definitely will happen no matter what I do, cos life".
Perhaps check out some old Jordan Peterson stuff from before he became New-Born.
Admitting the brutal nature of reality and try to explain it with an open non-ideological mind that doesn't initially judge it with good and bad (a life long pursuit) make controversial explanations available. Meditate (Try Sam Harris Atheist meditation).
Structuring your chaos is time well spent. People get tired of the latest meaningless high, and want something to count on. Chasing "Happiness" is meaningless, and meaning is more important than happiness - that's why people dedicate themselves to sometimes deadly ideologies

I like these questions but this is just the society we live in
Even though we know nothing, we just kind of live and not wanting to is considered terrible, but I understand this

Thanks, I dont really see why we do or why its bad to not want to live.

Without religion, only the purpose one makes themself

But with religion we can sometimes not be allowed to be or do what we believe

It is also Illogical

Christianity follows a god of logic, He does everything by the rules