Like I say a bargain for a nifty. From flannels , I think there's some m as

I'm a skinny guy, weigh roughly 54kgs and around 5 ft 6 inches tall. I really struggle to find clothes that fit well without being too baggy or too tight. Any tips from anyone who is a similar build? I dont want to have to wear skinny fit all my life and I can't afford to have everything tailored. There must be brands out there that cater to smaller men without making everything ultra skinny?

Looking to branch out of the high street options - does anyone have recs for some more niche brands. I don't mind about budget.