18 y/o back to gaining weight due to starting uni and moving country (tips for loosing weight again)

Hey, about a year ago now I was 18 stone, then I began intermittent fasting and dropped down to 14.8 stone. I lost weight pretty quickly early on and haven’t done much excessive due to being in pills where a side effect is making it so I feel hot really easily and sweat alot. I have a binge ed and it isn’t fully back but due to stress and moving back to England (where the easily available food is the stuff I had as a kid/ prefer to eat) I have gained weight again. I’m now back to around 15.10 stone.

to clarify, I am 5’10 and have large boobs so those do mean I will weigh more than shorter people/ those with smaller breasts.

My main issue with weight is my stomach and my face, I have a very chubby face and I seem to gain the most obvious weight there. I have also randomly started to be pretty spotty, where I never was before (so idk my body has decided I need to be the type where I’m spot free during puberty but spotty as an adult or smth)

to be honest I’m really bad at exercise. I loose breath super easily and I get very quickly demotivated. I used to be a track runner and play tennis and netball but I stopped a few years after moving countries as I didn’t know the language so couldnt understand my coach very well.

ive never been super thin but as a kid I was always adventurou, loved to explore the countryside nd climb trees, do sports etc. so it’s pretty humiliating to look back at pics of me as an 11 year old compared to me now.

I’ve been fat for a long time now too so I have like o Nima stamina now. Which feels funny as that was always my strong point in track (I raced in cross country) basically ig I’d get stitches and be out of breath but sprint at the end, so I’d almost pass out after I’d finished. Tbh it’s probably because I’m not the fastest so I couldn’t do short sprinting but I was good at pushing myself that the end to pass a few people before I finished.

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anywys that was unnecessary to add but my Reddit always bugs nd I can’t backspace so I’ll do a tl/dr

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tl/dr: I’ve gained weight again and want to finally start loosing weight and get thin. I need tips on how to start other than me just looking it up because I’ve tried that, mo idea if there’s anything I don’t know already but it would be a huge help. I need a way that isn’t too much excessive to start with atleast s I have lost all of my stamina and I’m on pills that make me feel hot very quickly. I’m 18 f ,5’10 (big boobs so one reason why I’m also a bit heavier) and around 15.10 stone. Any help is much appreciated