What to do, poss head gasket?

So my 2013 1.4tfsi has been into 2 garages for coolant loss & random "Stop engine low pressure" light.

First garage said head gasket & quoted £3,055 for the work, but they added w/pump & belt plus timing chain on a 60k engine.

Second garage concurred but refused the job saying Tfsi engines were rubbish & couldn't guarantee it was head gasket alone! And fitting another engine would cost 3-5k!

Third was online community who all say both are a joke, & a few mentioned the intake manifold cooler as possible reason?

So sniff test done & failed, compression test & failed (none said what readings were or what cylinder(s) )

Now it's losing coolant rapidly, however there's no white smoke, oil is still clean & runs absolutely fine with no misfires.

Car on a good day could fetch 5-6k due to improvements made over 4 years i've had it. Now stuck on what to do or go next? I live in Crewe & no particular VAG specialists nearby other than official garage.

Edited 1 hour ago1 hr by cockneyrick