Yesterday I was playing a one-shot DnD 5e and didn't expect that I would become salty.
The one-shot started at level 5 and I made a Sharpshooter\Fighter and my character was Neutral Good.
So my character had to alone fight a bunch of harpies as the entire party was charmed by them, trying to get the harpies away from the group until they could snap out of it.
I lost most of my HP, nobody offered to heal me and I only had one potion and used it.
The next encounter we were fighting a flying beast, I don't remember its name, and the same thing happened: the beast stunned some of the PCs and was going to attack the quest giver NPC. I defended him and ended up being carried by the beast in its talons where I had to roll a dex save the next turn.
So my party, instead of fighting cautiously or doing anything to help me, just throw spells at the beast while it was carrying me and my character lost all HP from their damage.
I spent the rest of the session on my phone because my character was unconscious and the party decided to keep walking instead of taking a short rest or heal me.
Their justification was that they all were neutral to me, even after I showed good will by protecting their characters while they were charmed.
One was RPing as a guy like Guts from Berserk and his character didn't care about anybody besides himself.
The other two were Elf brother and sister that only cared for each other.
One was Chaotic Evil so I didn't expect anything from him and there was a Lawful Good monk who was carrying my unconscious body around and didn't have anything to heal me with.
Finally, my character woke up by the end of the session, only to go to jail because one of the other PCs decided to rob the quest giver.
I asked the DM if there was anything I could do to wake up or anything, but he said that there wasn't a thing I could do.
Needless to say, I didn't have fun and was salty. Seriously, I wanted to just leave when my character was still unconscious one hour into the session as I wasn't playing. I was just watching the rest of the group have fun but didn't want to ruin the mood as the guy who took the game far more seriously.
There isn't any group near me that plays D&D and I decided that no game is better than a bad game.
I don't know whom to blame: myself, for taking this seriously, or the DM, that should have known that I wasn't having fun and should have done something.
In my opinion, he could have said "Welp! Your character died, roll a new one and he joins the group by chance." Or he could have made the NPC have an extra potion and heal me or do something to make the PCs help me.
I can't fault all the players: some of them were new to D&D and RPGs in general while the DM is seasoned and always tells stories about scenarios he ran and how great they were.
How can I tell him without hurting his feelings?