The protocol you were on for TRT was completely inadequate… 250mg 1x per month… some guys get that every 7-14 days under competent endos. Plus, it can sometimes take a few months for the effects of TRT to really be felt in terms of libido coming back. So you don’t REALLY know wether it is a T issue yet because you have yet to be put on a proper protocol.
As for Nolvadex, if you took that concurrently with the TRT then it might’ve interfered with it.
Anyway, the point is – at this stage your T levels are below range and likely should be treated REGARDLESS. Maybe consider clomid, or hCG. Otherwise Androgel or T shots for TRT… it’s not healthy to be hypogonadal, and your weight (excess fat) and cholesterol issues likely stem from this.
Consider finding another Endo (or an Anti-Aging doctor), or flying to the USA to see the other docs. There are resources on this forum/links to websites to find such doctors worldwide, and some docs listed that are in Europe you might also want to consider giving a call.
Keep us posted.