Holy shit!! a masters for a park ranger!!! this world is so fucking unfair. So sorry. Are you sure there's no other positions at national parks that don't require masters? It just seems terrible to put such a high barrier in front of a much needed job.
You might want to check here out to see if there's anything you'd be willing to try and if it pays enough or if there are enough jobs to sustain you:
https://www.onetonline.org/link/summary/45-4011.00
Explore opportunities to work for the National Park Service, from paid employment to student positions to volunteer positions.
www.nps.gov
www.nps.gov
Conservation scientists and foresters manage the land quality of forests, parks, rangelands, and other natural resources.
www.bls.gov
Caring for the Land and Serving People
www.fs.usda.gov
If you find something you think you can make a goal. I highly reccomend trying it out. Studying for a GED or living will be easier if you have a goal. Plus you may enjoy life more. Best case scenario, you have fun and are no longer suicidal, worst case scenario, you held off on suicide for a few more years. I don't think there's much to lose if you try something out. Suicide will always be an option for you.
Also i understand that fear of being unable to keep up with things. If you're just using youtube videos i recommend doing a course and just spending an entire day on it. WOrking in bursts usually help me cause i'm terrible at keeping up with things. I've learned entire courses in one day by just doing it one sitting. Like i work for 30 minutes watch anime or read comics for 5 minutes and then repeat like for more times then take a 1 hour break to eat, take a bath or watch a movie.
Didn't work for me these past for days tho. cause i'm studying for a job i don't want and am technically being forced to do.
Good luck tho. I wish you all the best and I hope you find peace.
sorry again that this world is so shitty.