How much do they entertain themselves.... at wits end

[cancancan]

So DD 5 is an only and is likely to stay that way.

She asks often for a sibling, but obviously in her head a sibling would come out aged 5 ready and willing to play with her 🤣

The problem is, she refuses to play by herself at all.
For example yesterday, we went to local theme park, we went with her older cousins who all love her, play with her and give her attention. After the theme park we can back to ours. She wanted the cousins to go play in her room but we were all knackered... so the cousins said they didn't want to. They all stayed for an hour then left.
As soon as they leave, it's about 5pm at this point, she wants me to DH to play in her room. We say we are tired, need to do dinner etc.... why don't you go and play?

She then does what she always does, stamps her foot, cries and says "but I have no one to play with"
We ended up playing a board game which is was losing interest in half way though!

I'm really struggling not to lose my temper now when she does it. She never plays on her own. She had the attention of us and her cousins all day but won't spend half an hour on her own while we do dinner/chill out for 5 seconds.

The only thing that will keep her entertained on her own is her IPad.... and even now with that she's started asking us to sit and play the games with her.

She has all the toys in the world to play with, every barbie doll you can imagine... she even asked my mum to buy her some more... and she did!!!

How to I get her to understand she needs to play by herself some times?

Does she have toys like Lego, puzzles and so on? Neither DS nor I were interested in dolls, but aren't they more of a social toy? DS used to play with Lego and watch mythbusters DVDs at that age, or I would take him to the park where he would find children to play with.

My only didn't play by themselves, including watching TV!! until about 8 yrs, excellent lego builder so would do that but I had to be the lego sorter. My top tip would be to encourage friendships with other only children, have lots of playdates and sleepovers

She has everything... Lego, puzzles, barbies, dolls, cuddlys, art and craft stuff all easily accessible.
We do play dates when we can... obviously only recently we can actually be at peoples houses! Her best friend is an only child and do try to see her when we can but obviously not convienent to see each other all the time