I live in an area that's heavily dominated by protestants, so my experience is mostly with them, I don't know how that's for catholic areas. The Netherlands are famously protestant as well, might be similar.
There are churches, however, where many of the people are there because they genuinely believe it, and they think that they have very good reason to believe it (and they aren't afraid of engaging with atheists who think otherwise), and they try to live out what they believe in real life. If you find a church like that, it feels and acts completely different.
In orthodox churches and especially monasteries it is essentially mandatory to give you a place to sleep while doing some work for them until you get back on your feet.
It also used to be customary for people in villages and towns to always accept a traveler for the night, but not anymore, unfortunately.
Orthodox monasteries larger than a skete are obliged to provide hospitality, but the prevailing interpretation is that this hospitality is limited to three days, and then it is the abbot's call to let you stay further or ask you to leave.
OP: If you can, do go there. I am not at all religious, and you don't have to, but this is a solid place to start.
Seems like you had a bad experience at a church or maybe you've never been in one and you're judging them based on the media you view.
Either way, not a good reason to make wide blanket statements like that.
Making blanket statements after one or even a handful of experiences doesn't help anyone and can be said about things also not relating to churches as well.
A late family member of mine in the OP's approximate situation was taken advantage of by a local church, which gives me pause when people say going to one for help is a bulletproof-good idea.
I'm sorry for not providing context right away, the original statement on it's own was too broad.
It is, however, unfortunately not universal. I recently tried to drop off some extra Christmas toys I had mistakenly ordered on Amazon to a local Catholic church and they absolutely refused to take them and distribute to a needy family. I was floored.
For the last ~9 years, I've helped run a homeless shelter based out of a church in London, UK. We often get offered donations of clothes and unfortunately we have to turn them down unless we know of guests who need those specific items (e.g. men's 32-34" waist trousers or a pair of size 10 shoes). This is because otherwise we find that very few items get taken and we don't have space to store them, so it just means we have to take them to a charity shop anyway.
Please don't be upset by your offering not being accepted - it can be hard to find the right place to use it and, if the organization is run by volunteers (as the one above is), they might not have the time to manage this.
Incidentally, other shelters operate very differently from ours, and some definitely do accept clothing donations.
Certain flavors of US churches look like this, too.