Behaviour problems!

[whattodoandhow]

My DS is 22 months old and in nursery 3 days a week, he started nursery when he was 1 and everything was ok initially but over the past 4-5 months his behaviour at nursery has deteriorated massively. He is constantly seeking attention (mostly from his key worker but others too), to the point where he will act out towards the other children and even other parents when they come to pick up their child. So far this week I have had behaviour forms for pushing a child, sitting on a child, shouting and pushing parents and attempting to bite another child.
The thing is he has tantrums at home but never to this extent, the nurseries only advice has been to take him to toddler groups when he's not there (I work full time and my parents look after him on the other two days and there are no groups in our area) and to take him on a holiday to spend time with me.
I'm completely at a loss and just don't know what to do, I can't afford to take time off work and I need to work full time to afford the mortgage but this is all they are advising.
Any suggestions would be greatly appreciated as currently I feel like the worst parent in the world.

Replace "seeking attention" with "seeking to connect (with the adults or children)".

He isn't quite 2 yet. He is really still learning how to negotiate his way around.
What is his speech like?

What kind of a Nursery "gives out behaviour forms" (???) for a little one who hasn't even had his 2nd birthday, pushing or sitting on another child ??

What kind of Nursery suggests that a FT working parent can change his behaviour by taking him to a toddler group, without offering any suggestions of things they might be doing themselves to help him learn how to negotiate his way though the day ??

Do you have any other Nurseries you could go and look at ?
It strikes me this is not a problem with your ds, but an issue with the way the Nursery are - or aren't - dealing with pretty normal behaviour in the baby room.

Agree with @BackforGood Behaviour forms for a tiny tot?

You aren’t a terrible parent. However your nursery does sound like a pretty terrible nursery. Could you move him somewhere else? I’d be worried this nursery is well on the way to labelling him a naughty child and he’s not even two!