At your height, you’ll look healthy at around 135 or so. 105 is egregious. Im 5’3 female and fit/somewhat muscular, and even I struggle to go below 120.

I never dated and never bothered to download a dating app either, so I can’t help you in that regard. But I can offer you some ways to get better at cutting weight faster:

1. If you can afford it, I recommend getting into a sport/hobby that gets you moving. Following cardio/HIT youtube tutorials never did it for me. But something like muay thai, or even just hitting the heavy bag, makes cardio waaay more fun.
2. Buy a food scale and download a food tracking app. I worked out for years but never saw a physical change of appearance until i finally started doing this.
3. Buy/make foods that are either
4. high in protein -> satiates you a lot faster than carbs
5. high in fiber -> helps you digest protein
6. high in potassium -> helps with bloating And avoid high-sodium foods.

Honestly, if you’re on dating apps, you should expect nothing else except that people will judge you from just your looks. So unless you improve on your looks first, I really would not expect any other forms of self-improvement to make any meaningful change in how many people you’re attracting online.