Did you try to SOAP into a PGY1 spot? Going through the Match as a surgical intern would have improved your odds in both ortho and anesthesia.
I'll assume you're taking a research year instead. You need to use it strategically, because it doesn't seem like anyone at your school is steering you in the right direction. Eleven poster presentations isn't a flex — the first one or two get a passing glance, and the rest add nothing. Convert some into publications (co-authorship counts) and write up one or two case reports where you're first author.
Your Step 2 of 258 is solid. Anesthesia, general surgery, surgical subspecialties, EM, IM — all realistically within reach. The bigger issue is exposure. Most DO students don't have GME at their home institutions, so there's no infrastructure and you have to build it yourself. Use your face time with anesthesia faculty deliberately: express interest in shadowing, ask them about their area of expertise (most of us have one or two topics we could talk about indefinitely), and get involved in patient care in pre-op, the PACU, and the OR. The goal is mentorship that produces a letter someone actually reads.
On specialty selection — explore anesthesia seriously, but also ask yourself honestly whether there's another specialty you could do for thirty years. You should have been asking this in your first two years of medical school. You don't have that luxury now, so be deliberate.
Anesthesia is generally accessible to DOs, though some Ivy League programs trend toward all-MD cohorts. Before applying anywhere, look at current resident rosters. A meaningful number of DOs is a green flag. No DOs in the current classes? Check recent graduates and young attendings who stayed on — that tells you more about institutional culture than the current roster alone. Some programs simply don't rank DOs. You won't change that, and you wouldn't want to.
If you want to match next cycle, drop ortho. Your application has the same gaps whether you're applying ortho or anesthesia — address them, and you're likely to get an anesthesia spot if you interview well and stay open-minded about where you apply. Those same improvements will not get you into ortho. That's just the reality of where that specialty is right now for DO applicants.