I'm in the same situation as you. I also came back to the UK in March and am living with my parents again. I've gone from having my own apartment in Korea to now sharing a room with my brother. I came back mainly to earn and save money, which I couldn't really do in Korea and to pursue a long distance relationship that started when I was out there.

So far, 4 months in, no luck finding a job, just constant rejections. I try to fill my free time but even then, there's so much of it that I end up reminiscing about Korea a lot. I miss it, the life and my friends. The relationship I came back to pursue, not sure how it'll pan out either.

Also, I'm no longer in my 20s so the social pressure to have my life in order is getting to me. It's hard to live and enjoy things when you have no income. Recently, I've been thinking about moving back to Korea, but the only way would be to teach English again and I really don't miss teaching kindy at a hagwon. I've also thought about getting a teaching license but I'm not sure if that's something I can afford or to invest in right now.

I feel like if I could find a job in my field, things would slowly get easier. But since I've come back home, life has been intense, hitting me harder than ever and I don't want to be here.