How do I start to make friends

It is hard later in life. Suggest you do things you want to do - U3A, classes, volunteering and Hope to make friends as a result. I joined U3A and love the group but have not made a friend that way but volunteering you're doing something and get to know people at the same time
Good Luck - it is hard as other people seem to be so "busy"

The WI is a great way to make new friends.

I joined an art class and made two good friends. My sister has a busy social life based on her gym. I think it's important to join groups according to your own interests and U3A has loads of interest groups.

Do you have a WI or Townswomen's Guild in your area? Both groups are a very friendly bunch and welcoming.

I agree with the others - adult learning is the way to go. You might not make friends there but it will get you out and you'll have the opportunity to meet people with a common interest.

Friendships may follow but it's probably not the best thing to sign up for a course solely for friendship as you may come across as too needy. Sign up for something you're interested in and enjoy it for its own sake.

Join U3 a, its marvellous!! Something for everyone And the groups are just starting up.!

Try joining something like adult education classes, where you will have a shared interest to discuss, or the WI or a pensioners' club or volunteer. Even if you don't make close friends, you will have someone to talk to.