Asos.com has 3.7 rating on Trustpilot. I am ordering clothes from them since 2017 and I have never had any problem and it amazes me why their rating is so low, asos is also considered as one of the best e-commerce platform. But it doesn't amaze me that Roobet has so high scores, they are really a good casino and their marketing team does a good job.
Sometimes the ratings don't make a lot of sense. If you look at the rating for booking.com, after 50.000 reviews they only have a score of 1.2. To be honest, I also didn't had a great experience with them (their customer service is not great) but it is a great and easy platform to use for travelling. So better to always check multiple sources if you want to have a full picture.