As you are discovering, you can't buy an unrestored 50 year old valve radio and expect it to just work. You could learn how to restore it yourself, or pay somebody to repair or fully restore it for you. There is a forum section for commercial repair requests:
https://www.vintage-radio.net/forum/...play.php?f=145
If you have no electronics expertise at all there will be a lot to learn if you want to do it yourself, but it's perfectly possible if you are genuinely interested. Forum members here are very supportive of beginners and can provide lots of advice and guidance.