One problem with the airline industry is that amplifies the cyclical nature of the economy. You may start training when airlines are begging for pilots, to emerge 18 months later when they are laying off people. £100k debt and no job is not a good place to be. Although Commercial pilots licenses are valid for some time, the type ratings and qualifications attached to them are fairy short lived, so if you don't get a job its difficult and expensive to keep your qualification current. Experience is everything in a poor market, and new joiners have no experience. I say this as one who flew over 46 years and was lucky in the military and civil world. Oh, until the company went under just pre covid! But I enjoyed my time in the air, its great fun if you can get someone to pay you to fly, so long as you know the risks.