Borrow one. It's a skill you need to persevere with. Not just the finger dexterity but toughening the pads of your fret fingers.
£30-£50? Try a ukulele.
£50 isn't going to get you anything new that won't be impossible to learn on. Go on Facebook Marketplace and find an acoustic steel string that you like the look of and has a name that looks somewhat legit.
For that, a second hand one. But as the others have mentioned, it's a skill you need to persevere with or it just won't work. You won't be an expert after 2 months and in all likelihood will sound terrible still.
I've been playing for 50 years and still sound terrible. But that doesn't prevent me enjoying plucking and strumming to please myself.
It's all opinion I suppose but for a guitar virgin I would steer towards nylon strings to learn the basics less painfully.
I taught him all the finger and wrist work.
If you're looking to pick up and learn, it is highly likely that you want to firstly be able to play chords on it and you're not likely to be aiming to play classical guitar without a lesson. Nylon sounds terrible if not played properly, go steel string and build up your calluses.
You must be highly strung!
