Earlier quoted context omitted.
Play Tarkov, it will destroy your faith in the concept of faith.
As someone who played Rust and had to remove it from my steam account because of how much I loved it - can you elaborate?
That's the player side. The other faith you'll lose is in the developers to fix your pet peeve bug, because while they make large gains and fix many things, other small things tend to be left for a long time that drive people crazy.
I've not played Rust, but from what I've seen of it and what people have commented, Tarkov is like Rust but more extreme and more realistic. Depending on why you liked Rust, you might downright love Tarkov, and it's already highly addictive, so maybe don't install it? It often feels like Dark Souls the looter FPS edition, because it's so, so rough sometimes.