Just to add some more cents of knowledge, here you have a video of me and my wingmates killing a Thargoid. Some things to keep in mind:
-This video was recorded during the first week of alien presence. So, no multicannons or advanced modules. Also the Thargoids were far less lethal than nowadays.
-Despite the voices are in Spanish (and I will NOT make subtitles for them) I can summarize our talk to "Oh, man, that did hurt", "Not the shutdown again!", "Those damned thargons are kicking me butt", "Heart exerted!", "Shield up, use beams", "going to rearm" and "moving back for repairs".
Specially when fighing the tharg in close range you will see how we kept doing "boom and zoom" maneuvers around it; on of us would hold its fire for a few seconds, then boost to its back and another one would distract the alien. That way we could very effectively reduce the ammount of damage to any single ship.
Also, back then there were not flak cannons. Our tactic was to organized coordinated retreats if needed to get away from the swarm, and we did that always towards the system star. Nowadays this tactic is no longer valid, as the swarms became very fast and stay close to the mother ship.
With that said, hope you learn something from our past battles that will help you in your future ones
[video=youtube;86P7ehVKuhk]https://www.youtube.com/watch?v=86P7ehVKuhk[/video]