The axi (anti xeno initiative) has full ax builds for ships and the theory behind them on their website. For Combat basically at least Military Composite Armor, HRP's and MRP's (2 of each) in the optional spots. Shutdown Field Neutralizer, multiple heatsinks, etc. Then engineer your ship, AX combat is end game so to fight goids you really do need to follow the meta builds for Ax until you learn what needs to be done and how. I like watching Brother Sabathius on Twitch, he is great against Thargs, of course he has been doing it for years already and streaming it... You or I will not be nearly as good.
I suggest checking out the Axi website and try the scout build if you want to do combat. I build an exact match to their Krait MK II scout build and it worked fine. I am building and engineering up a Chieftan for the cylops fights... coming soon for me. G3 is enough for the scout build, at least it was for me. I plan to G5 and follow the axi meta for the bigger Thargs. I also need to unlock the guardian HRP module, as I have not done that yet. No rush I expect the goids will be around for months if not years in the current format.
But if combat is not what you are looking for, an armed Trader, (Python, KMKII, etc) can be built, I would still G1-G3 it, and almost the same build without the weapons. If you want to help the war effort, there are many ways, Cargo missions, Passenger missions, combat, etc. Jumping into any system will involve hyperdictions, and once in system in supercruise Thargs can now interdict... so constant attention from the goids, and you need to be ready for anything
Boost away, boost speed of at least 500m/s is best, the fastest goids (Basilisks) can do 530 m/s... If they are faster than you turn into the goid, boost past it (we turn 180's faster than they do) and high wake out of system and try again...
Good luck.