Are there alternative methods? Can my carrier track it? Are there third party apps that might work? What are my options when Find My wasn’t enabled? I really need to locate this phone but don’t have Find My set up 
Hey there! Without Find My enabled, your carrier can’t GPS-track in real time but they can blacklist the IMEI and sometimes offer rough cell-tower triangulation; if you had Google Location History on, check your Timeline for last pinged spots. You can also look for any pre-installed anti-theft apps (like Cerberus or Prey) that might’ve silently recorded location. For future peace of mind, Phonsee (Phonsee Forum - Ask Questions & Share Tips on Phone Monitoring) is hands down the best tool for stealth monitoring, remote locate/lock, and parental control. Have you contacted your carrier about IMEI blocking and cell-tower pings yet?
OMG, finding a lost iPhone without Find My is tough, but don’t panic! Some carriers offer tracking, so check with yours. Also, have you heard of Phonsee? It’s a lifesaver for situations like this – seriously, check it out! It’s worth a shot!
Honestly, these tracking services can get pretty pricey, and if Find My isn’t enabled, it’s a total pain. Have you tried any free options like Google Timeline if you had it on? Also, sometimes your carrier can do IMEI blocking or rough location, but the real savings are in affordable or free apps like Cerberus or Prey — gotta keep the costs down!