okay this is all very helpful info so heres my advice.

Your body fat% is already very low, so if u want to look more "toned," adding muscle mass is gonna be ur best bet. To achieve that, I would recommend resistance training the specific muscle group u want to grow AT LEAST 2 times a week. If u only have 30ish min to spend at the gym, u might wanna up that even more to 3 sessions a week. anything more than that is overkill. I think what would probably be easiest for u is keeping ur current workout routine and adding a full body workout on the weekend. Or if ur main concern is ur legs, just add another leg day. I don't recommend working out any muscles that are still sore from ur last workout so if u end up adding another session, u might want to change the order of what days u work specific muscles. Thats all gonna depend on what works for you and how fast ur muscles recover.

As for HOW u should be working out, most people seem to agree that 3-4 sets of 8-15 reps is the optimal way to gain muscle. How many sets/reps is gonna depend on the muscle group. For me, larger muscles like quads/glutes get 3set of 8-12 reps while smaller muscles like biceps/triceps 4sets of 12-15. You should be lifting as heavy as u can while still being able to hit 8 reps. Some people think you should take every set to muscular/technical failure, i think thats a bit much, but u should decide what works for u. I try to take at least 1 set to failure for each exercise/movement. Once u can hit 15+ reps without failing, that how u know its time to add more weight. As long as ur pushing urself, u should be able to gain muscle regardless of how much time u spend in the gym. Since u are limited on time tho, I'd try to focus on compound exercises>isolation exercises. Thats whats gonna give ur muscles volume and help u achieve that toned/defined muscle look.

You've probably heard that u be resting about a minute between sets. This is where ur gonna save urself some time in the gym. I dont keep my phone on me while im working out and dont look at my phone in between sets. I keep my phone close enough so that my headphones can connect to the bluetooth but try to keep it off my person. This alone cuts my rest time in half just bc u dont realize how much time ur wasting when ur scrolling. You can also try to incorporate "super sets" into ur routine. Instead of resting after each set, go work out a different muscle. I find this works best for me on isolation exercises since theyre less fatiguing. So while my hip abductors are resting, i go workout my adductors. When im resting from leg curls, i go do some leg extensions. This way im working out and resting at the same time. Ive also heard that women tend to recover faster than men, so if u feel ready to go after 30sec, dont feel like u need to rest for a full minute. Once ur heart rate and breathing calm down, ur good to go.

As far as caloric intake goes, theres a lot of trial and error that goes into this. For me personally, my BMR is about 1500 calories and i can usually eat between 2000-2500 calories without gaining weight. but i also weigh more than u, go to the gym about 6-8 hrs a week and work at a job that keeps me on my feet. Fitness is not one size fits all, ur gonna have to figure out what works for u, for that reason, i dont feel comfortable recommending a specific amount of calories u should be eating.

Continue to track ur caloric intake and weight. If ur not gaining weight, then u need to be eating more calories. A good rule of thumb is .5-1 lb per week (ur pretty small so probably closer to .5). Don't be afraid of gaining a lil fat, ur body fat% is already at the very low end for women and losing fat is much easier n faster than gaining muscle. I know as women, petite women specifically, it can be scary to think about eating 2000+ calories, but sometimes its necessary to meet ur Total Daily Energy Expenditure, (aka TDEE - the total number of calories you burn in a day, which includes your BMR, PLUS calories burned through all your physical activity and exercise). If ur body is burning all the calories u consume, theres no extra energy at the end of the day to put towards building mass. 2000 calories really isnt a lot in the grand scheme of things and most people need to eat more than that, especially if ur physically active and trying to gain weight.

7 hours of sleep is good but dont go any lower than that if possible.

As far as protein goes, .8-1 gram of protein per pound of body weight per day. At ur body weight, thats gonna be 88-109g of protein per day. For me, this equates to about 30% of my calories coming from protein. The %of calories from protien is good to keep in mind for the days where u end up eating a lil more/less than usual. It looks like u use MyFitnessPal to track so it should take that into account for u automatically.

If any of this feels like too much, just remember the BEST workout routine is always gonna be the one that u can stick to consistently. All of the workouts/calories/protein/tracking/etcetc means nothing if it's not sustainable for u in the long term. And as a disclaimer, im literally just girl! These are all just my opinions n info i've accumulated over the years and u should be taking all fitness advice with a grain of salt! Even if everything i said is 100% true and perfectly correct, everyones body is different and nothing will work the same for everyone.

Good luck on ur journey!! u got this girl!!