Girl pls do not do that, liquid bbls are notoriously dangerous and I wouldn't recommend diy filler or botox either, it being so normalized with people here doesn't at all mean it's a good idea
If you still plan on going through will it please do tons of research and I believe there is a guide on it on this forum
You have a pretty good profile as is so my advice would be to start on a safer note and adressing things like your inflammation, jowls, lips, etc.
Do you drink? You seem to have some cheek inflammation
I would say focus on getting good sleep/lots of water/losing weight which is basic advice but you have a very nice face from the nose up and I think it would make your features more flattering
I think chin filler will improve your profile as well but I would focus on toning your face more before you get to that point as it will increase your facial harmony overall
Your bangs could use some work but your hairstyle compliments you pretty well already
Overall I think you potential personally I would just focus on things like filler near the end, hope this helps