Spoilers for all 3 endings.

Is there actually a positive end to the game?

In the bad ending everyone except walter dies but the coral is destroyed and can no longer be used as fuel. So pretty bad

In the good ending most people still die. The only people really surviving being a couple red guns and a couple vespers. Also all the RLF characters survive. However coral can still be used as fuel thus making it not great.

In the true ending everyone dies. Every redgun, vesper and main RLF character. In the end the only one that survives is Ayre who you achieve symbiosis.

Bonus:

If you wanted you could categorise the endings in relation to ayre. In which case you get:

The domestic violence ending.

The friendzone ending.

The happy marriage ending.

Edit: I’m seeing a lot of answers about coral and stuff so I’ll rephrase my question better. I mean in reference to us as Raven and the relationships our characters build with other characters are any endings personally good for us. Ignoring the greater good and what should be done with the coral.