> How can someone get up in such a difficult situation?
The alternative is even bleakerYou can help cultivate "luck" to a degree by increasing your number of experiences. Every person you happen across could be the one to change your life, and every job application could be the one that calls you back. You never know who is standing next to you in line.
And "support" you can tilt in your favor by trying to be a genuinely good person and being pleasant to be around + making others feel good. Humans gravitate towards people that they like being around.