Ooh! I have personal experience of this! I have just spent £40 on lessons to teach my ds1 how to ride a bike.
Best. Thing. Ever.
Back story: ds1 had an issue with his arm which involved multiple operations and meant that back when other children were learning to ride bikes he didn't. So, 10 years old, still can't ride a bike, falling behind his friends, confidence rock bottom.
Dh tried to teach him. Failure, would get severely anxious, always ended in tears.
I tried to teach him. Failure, more tears.
My dad tried to teach him. No tears, but also no progress despite multiple attempts.
These various attempts were over the space of around 3 years btw.
So we bit the bullet. Local bike charity, 1-1 one hour lesson £20. We reckoned if it turned out to be something he really couldn't do, a balance issue or whatever, they'd at least be able to tell us.
At the end of the lesson - he could ride a bike!!!!! It was honestly amazing. Second lesson wasn't really necessary but it was fun and he learnt about the gears and a bit of maintenance as well as practice.
His self confidence is through the roof, he's out on his bike every day.
The £40 was a bargain
.