I think it is important to understand why you lost a match in order to become a better pilot. Did you focus on the main threat? Did you bring a ship that can counter the enemy ships? Did you bring a ship that works well with your ally? Did you bring the right ship for the map? Did you spend too much time shooting a ship instead of saving your teammate? You can change all of these things in the next match to improve your chance of victory.
If you blame your crew or your teammate for the loss you won't learn anything of value. In my experience it will just make you a bitter vet and you will never play with anybody below your skill lvl. Knowing how to play with bad players is what makes you a good pilot in my book. In pub matches it is not about how well you work with your teammate but how well you work around them.
I try to avoid blaming my teammate as much as possible. It's not always possible not to in some situations, but I really do try to think of how more observant to their playstyle - or lack thereof - I could have been to prevent such a crushing stomp. As a kill squid, I consider myself more opportunistic. With a good ally who communicates, I have a better control over who I can engage, which is almost inevitably going to be the higher-level mobula on the enemy team. In other ships, I am far less sure of myself so I should back off go-fast-shooty-banshee for a while, I think.