Not a lot of options. I'm going to explain the problems first, then offer some insight into how we immigration lawyers might tackle the problem.
If you have >1 year of unlawful presence after 1997, or entered illegally it may be very difficult to qualify for a green card. El Salvador had TPS since Feb 2001, so some may qualify under an old law, 245(i). Otherwise, this option is dim.
Asylum requires filing within 1 year of last entry. Some people may qualify, but generally you'll need to show changed circumstances (personal or in the country) or something extraordinary in order to file for asylum. And risky.
General fear of return won't help. You'll probably need something new.
"Switch to another status."
If any unlawful presence, you can't change to, say, a student visa. Even if you're eligible, most will be denied because you've been here for so long.
"Cancellation of removal?"
Possibly. But you have to be in removal proceedings, be here for 10 years, generally...
Not many people will qualify. Plus there's a backlog. More waiting/uncertainty.
If your original entry was unlawful but then had TPS, this will work (currently) only in the 6th and 9th Circuits (KY, MI, OH, TN, CA, AZ, OR, WA, HI, AK, ID, MT, NV) and some district courts. BUT:
If no AP re-entry, you might qualify for a waiver, but that will require you to leave the US and re-enter. Highly fact-specific and not all will qualify.
Again: *generally bad country conditions do NOT qualify you for asylum.* You will lose your case.
Recognize that you are in a vulnerable position. Get second and third opinions from reputable lawyers. If you file wrong, you will serve yourself up to ICE.
Whatever you do, please follow these guidelines:
2. Don't listen to family, friends, or word on the street. Get the right advice.
3. Make a plan based on what the law is, not what it might be. Don't wait for Congress.
4. The more you know, the better off you'll be.