Lost and desperate

I'm by no means an expert, but I'm pretty certain you're not eating enough. 800-1200 calories plus daily workouts? No way you are eating enough.

Your BMR is probably between 1500 and 1700, and your TDEE is probably over 2500. You should be eating at least your BMR daily, and more if you are working out. You should also be focused on strength training rather than repetitive steady-state cardio. Mix up your workouts and eat more - especially protein and quality fat.

You said you've tried everything but I only see basically one lifestyle.

Sounds like you are not eating enough and you've plateaued. Change up your diet and workout!

It sounds like too few calories and a plateau to me. Have you considered adding resistance training to your workouts? Building some muscles mass could really help you out here I think. If I was you, I'd start to slowly increase your food and add in some weight training. Adding some muscle mass will up the amount of calories you burn in a day. I'm a personal trainer, so if you wanted some tips on where to start with weights feel free to message me.

Quickly here are what I recommend you do since I have my girlfriend doing this routine and has seen great results.
specifically to you.
Your ideal weight: 125-157.
Macros for goal weight of 130 pounds (burning fat!)
104g protein
174g carbs
31g fats
1394 calories

Macros for Maintenance at weight of 130 pounds
130g protein
217g carbs
39g fats
1737 Calories

Macros for bulking for a goal weight of 10 more pounds, so 140 pounds (building muscle) (aka lean bulk)
140g protein
280g carbs
52g fats
2240 calories

Workout:
Monday leg day
Do 4 sets of 12 reps for the following workouts below, then once the last set is done do one more set with a lighter weight until failure.
- lunges
-squats
-Romanian dead-lift
- calve raises (just do 51 reps with a weight you can handle and that is all; so basically one set with 51 reps)

Tuesdays
-Run for 20 minutes, giving it your all.

Wednesdays:
Chest and Back day (you want to have muscle in these areas, don't worry its like impossible to "accidentally" become bulky looking or whatever the girl lifting weights myths are.) (trust me, you want muscle in these areas to look your best! i promise.
Do 4 sets of 12 reps for the following workouts below, then once the last set is done do one more set with a lighter weight until failure.
-Wide pull
-dumbbell row
-dumbbell incline press
-dumbbell bench press
-push ups (do just 3 sets until failure; meaning, you'll do your first set until you cant no more, then another set until you cant anymore, then the last set until you cant do any more.)
- crunches (just do one set of 51 reps)

Thursday:
-run for 20 minutes, give us your all!!

Friday: arm day
Do 4 sets of 12 reps for the following workouts below, then once the last set is done do one more set with a lighter weight until failure.
- dumbbell rear dealt raise
-dumbbell side raise
- triceps cable press downs
- lying dumbbell; triceps extensions
- dumbbell pro curls
- dumbbell hammer curls

Saturday:
- Run a 5k at your park or at the treadmill. Finish this every Saturday. doesn't matter how long it takes you but you will finish and every week you will become faster!

tips:
if on Wednesday or Friday you still have energy to burn and feeling good, then finish your workout with HIIT.
basically this means pick your preffered way to do cardio, either running, rowing, or bicycling.
--->this workout will last 5 minutes total
- for the first 30 seconds of every minute you will just walk, row slowly, or cycle slowly
- for the lsat 30 seconds of every minute you will give it your all; so sprint, row fast, cycle quickly!
//hope that made sense

**do this for about 10 weeks and you will see great results
**also cheat days: you can cheat on the weekends. Meaning whatever macros your following at the top, just add 600 calories to the weekends of food to eat dont stress to much about % of macros on the weekends, it truly doesnt matter as much as the amount of calories you eat. For example, on your burning fat macros you will eat up to 1994 calories.
** cheat days will help your hormones stay in balance, particularly the hormone Leptin which is the hormone responsible for fat loss, so take these cheat days seriously and Eat up!!! :P
**it truly doesnt matter what you eat to fit your macros, just make it fit the macros I set up for you. (just realize that if you eat processed foods you may not have the micronutrients, but a multivitamin covers you there. But if you eat veggies and fruit then everything will be fine

Good luck!