BS”D
Teenager, it seems that you are busy trying to save the world rather than saving yourself!
There is a community leadership which is basically paid (in either cash or kovod) to take care of these issues, and if they cannot get their act together or they are the problem themselves, just move on ASAP. In 2 years you will have to move on anyway, and you will never see many of the people you are in contact with now, so don’t worry about problems that you will never be able to solve.
Don’t worry about the problems in your community if it means getting too deeply involved and being discouraged. And don’t think that being a magnet for problem cases is the same as chessed. These people need far more than you can ever give them unless you get proper training, and they are needy and take advantage of whoever tries to help them. Only a professional (and that does not even include most rabbonim) can help these people, and the best you can or should do is help them find a qualified professional.
Those who get into problem situations as we all do and just need encouragement to get through hard times are another story altogether, but it takes experience and training to know the difference, and when you have that, there are many proper outlets through which you can help those who can really benefit from your help.
When the time comes, you can get involved in the right way, or you can decide you are just not cut out to solve the world and therefore choose the path of a professional or business person who leads a Torah life and therefore quietly sets an example for the community without making a lot of noise or having an official title in some organization.
In the meantime, don’t get influenced by those who have thrown it off if you have already decided to come back.
Sorry to be so blunt, but Gitty has as little of an idea of the real world as you do; she is not someone who should be giving anyone advice, and you should not be taking advice from her or from others like her. Find the kinds of people you want to meet in the Torah world, not outside it. Whatever problems there are in our world, there are 10 times as many in the secular world, and the difference is that because no one believes in anything but themselves in the secular world, you can literally be left to die alone once your problems get too far out of hand. While not everyone can or should help in our world, unless you antagonize everyone around you, you are never alone.
That is because we know that we are never alone and that Hashem is always here for us, and we try our best to copy Hashem and do what He wants for us in this world.
And the only reason those who seem not to be doing what is expected of them stand out in the frum world is that we have higher standards. For instance, in the secular world, it is expected that when a man travels abroad on business on a regular basis, he has a girlfriend waiting for him regardless of the fact that he is a married father. When someone in our world does that, and yes, it does happen, it is a scandal of the first order as it should be.
When people in certain businesses and professions are caught for white collar crime it is considered typical behavior by his peers who are doing the same but have had better luck and have avoided prosecution. And if the convict is Jewish, the only support he gets comes from Torah organizations such as Aleph, as his own have disowned him, simply because he got caught and they did not (yet). When it happens in our community, it is an embarrassment, but nevertheless we try to help the person who is caught navigate the legal system and deal with prison because he is still a Jew and we know we, too, are not perfect and can succumb to the yetzer horo as he did.