My children are 3.5 yrs and 2 yrs and whenever we go to the playground if another child comes up to the swing they are on - the eldest immediately gets off - today she had just been on the swing for a minute and immediately relinquished it. The younger one cried because two small children were at the top of the slide. Whenever they are with someone new they cling to me and will rarely go on something at the playground if another child is there. At kindergarten (we are in Germany) two children came up and took the spades off both of them and then they complained to me.
I feel annoyed about it - I don't want them to be timid but also blame myself and maybe I have been too controlling or strict I don't know. I made my irritation apparent today which I should not have done and told them not to give things up they are playing with. I know my rational head knows they will not have understood and just seen it as me telling them off.