Horrible experience in the gym tonight

I'm interested to know what people think about this and what I should do.

I've belonged to my gym for 18 months, been seeing a personal trainer regualrly most of that time aas well as coming in on my own. I have always used the freeweights area as part of my programme which and am lifting fairly decent sized weights. I'm not on Stronglifts or anything like that but I am lifting. I've lost weight, got leaner, can see muscles emerging, feel stronger and gone down nearly 2 dress sizes. All good.

BUT over the time I've been there the gym has progressively got less and less friendly feeling, especially if you are a woman. OK if you want to faff around on some of the machines, run on the treadmills or prance about in Zumba but not when using the weights area. It was always used a lot by big muscly guys admiring themselves in the mirrors and there were never enough weights in the ranges commonly used by women. And they did tend to take up more space than they really needed. But usually they were OK. and made room for you.

But lately it feels like they have got a lot worse. Spreading out everywhere, dominating the area, turning the Tv channel to sports or MTV and putting the volume right up loud, sitting on the benches checking texts between sets, three guys taking over 2-3 machines or the chin up area and rotating amongst themselves so that no one else can get at it for ages. Basically acting as it they own it. The staff, virtually all male, also seem to encourage this, or at least don't discourage it. Not that they leave reception that often.

So tonight .....
I wanted to do some shoulder presses using a weighted bar (I am getting up to 17.5kg, not that heavy matbe but heavy for me). But there is no benches free, and 3 of the weights bars I might use are not on the rack but over with a group of guys, who are not actually using them but placed in a difficult to get to way that makes it clear they have commandeered them. So that is deadlifts out if the question as well. The TV is at max volume on some horrible rap music type channel. There are huge dumb bells and weights bars with massive plates all over the floor. There is lots of joking about and laughter going on but no a lot of actual lifting. I lurk, uncomfortable and unsure. One guy can see I want the bench he is sitting on (not doing anything) but tries to not catch my eye. Another guy makes a big deal of going around me to get some weights, as if I am in his way (I'm not). I I feel unwelcome. There are definitely no other women anywhere near this area.

So I give up and go back to the floor area, thinking I wll do some weighted lunges or glute bridges or dorsal raises, something.... It's crowded as usual. And one guy has collected up virtually all the available equipment - bosu ball, swiss ball, 2 step benches, a range of dumbells, you name it, and is hoarding them in the corner whilst doing his workout in front of them. The message is clear. What he doesn't have in his pile, the personal trainers are using with clients. 2 other guys are boxing (not together) over by the mirrors, taking up loads of floor space. Going over there is out of the question. There is only one girl in the area and she is also looking a bit lost and uncertain. She gives up and I see her head for a treadmill.

So I leave. Fed up and p*d off at the selfish, inconsiderate behaviour and the air of testosterone everywhere I come home and rant here. So am I being over sensitive? I am a professional female over 40 for pete's sake. Why do I feel so unable to stick up for myself? Should I complain to the manager about it? Why do guys do this? Or should i just find another gym...