AIBU to be really frustrated?

[midnightblue2018]

We live overseas and my son, 11 so the equivalent of Year 6. He gets quite a bit of homework and he is being really lazy. He takes forever, keeps on stopping to get a drink of water, have a wee etc. Doesn't seem to have any desire to want to do well.He has to do some Maths homework online and he was taking ages. Found out he had to tabs open and was watching Youtube when my back was turned and then switching back to the maths as soon as I was back. I've now blocked Youtube completely!
I get so fed up having to keep trying to motivate him. Does anybody have a child like this? Did anybody else have a child like this at that age who then went onto to do brilliantly? Make me feel better please. I'm tearing my hair out.

I have spent a few years like this with my DS. He denies the existence of homework.

I think though, at 11, he knows full will the consequences of not doing it, the punishment he will get, so he can choose to do it and not be punished, or not and be punished.

DS is now 12, and it seems to have clicked finally that only he can stop himself getting detentions.

He is allowed to play Minecraft for a couple of hours each day of the weekend and we've now banned it until Christmas. He is exactly the same with denying the existence of homework. He said he had no English homework, then I looked, he did. He said he forgot, but that is what he always says. Drives me mad.

Do school punish him too? My DS's school have always, since year 5. I support that totally.

He is now in year 7.

This is my child! He is 11, have tried everything to motivate and nothing works. Obsessed with any opportunity to play on his PS4 so we limit it to weekends only now.

Elder dd is like this. Younger dd just gets on with it. Elder dd (year 10) does always get homework in on time, but often ends up staying up late to finish it due to getting distracted. It's procrastination. I'm a procrastinator too and was the same with homework. I should probably make dd go to bed and get a detention for not doing it but i don't. Her teachers have no idea and think she's hard working. I'm not sure what the answer is.

why doesn't he want to do it? Boring? too difficult? Too much?
What are the repercussions at school if he deson't do it?