I assume your talking about escorting the convoy through the bouys.
It took me a few tries. Finally I just flew a little out of the way to the left when I was approaching the fight area (but before the ships appeared.) Be careful if you get too far off they won't hit the mine until you get closer.
After that, I just consentrated on the ships in the outskirts. After you take out a few then you can fly in and not repeatedly get wiped out as quickly.
Have lots of shield generators and nanbots repairs dudes.
If your shields are going out just run away (as Monty Python would say) and let them regenerate a little then get back in there.
Once you use this approach just a few times, you will suddenly get the win. Just takes a little practice.
GET AWAY from the big ships and take out the little fighters on the outskirts first.
Hope it helps

The convoy escort part isn't too hard, it might need a little practice but you'll get there. If you mean that you're having trouble with the bit where you defend Willard Station, make sure you stock up on Shield Batteries and Nanobots on Cali. Minor when you dock there. In the battle area, try to take out a couple of the gunboats, they're a pain. If you stick behind their engines, they can't hit you at all and you can just blast them. Remember that you can use the station itself as cover if you need time to let your shields regen

"There are 10 kinds of people in this world: those who understand binary and those who don't"

im stuck on the part where juni is near the valkyries
she's supposed to contact them, when they dont respond and open fire
i have nothing of the sort
juni just sits there
i think i might have accidently bumped one of the game triggers...?????

if you're using a cruise speed mod, turn it off, they completely wreck story mission triggers

"There are 10 kinds of people in this world: those who understand binary and those who don't"

The first part was quite easy, but I'm having trouble with the second part.
When I meet 3 ships near the California Minor nothing happens... I just don't get it...what should I do from there?? I've tried -I think-everuthing- already...

Do you mean the Valkyries are neutral and just sit there? If you've been running any mods and turned them off, use FLMM's restore backups function. If that doesn't work, reinstall the game

"There are 10 kinds of people in this world: those who understand binary and those who don't"

Yeah, that's right-this is the part I'm having trouble with... But I'm kinda new to this so I would appreciate if you'd explain me what is FLMM restore backup?
Thanks!!

click tools in Freelancer Mod Manager and click Restore Backups

What was FL2 and is now ...............*suspense and drum roll* .................... FL: Fallen Universe!!!!

I'm beginning to think that the game I've got is faulty... I don't use mods and Uninstalling/Reinstalling won't help a bit..
Also the sound is weird - sometimes there is sound and sometimes in the same place there is silence (there is no talking, I can hear footsteps and backround noise).
If there is some further information you have to give me I'm open to different oppinions.

simple answer is to keep bashing em till they die

or an alternative is:
The Freelancer SDK v1.3 fixes bugs in many of the INI files (what Freelancer uses to make the game run), and this problem of yours might be included in there...

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It could be your sound card. Some sound cards are not compatible with the game. When it's a sound that triggers the next part of the mission, sometimes it never happens.