It's not a matter of 'better or worse,' it's a case of who carries what!
All of the shopping platforms aim at different target markets; Lazada carries much greater variety of food items than Shopee, which does carry quite a lot when compared with Temu, that carries very little. But Shopee seems to carry better quality electronics than Lazada (just my impression) while Temu's electronics are not something I would bother with. But at the same time, for small household items, craft items, etc., Temu is best and doesn't charge for shipping each individual item bought!
All the shopping platforms have both good and dodgy items for sale. It's imperative to carefully read ALL of what is written in the item's description so you don't wind up buying a 'picture' of the item you wanted instead of the item itself. (Don't ask me how I know about this one...)
At any given time, I usually await delivery of 1-2 orders every week. It feels a lot like Las Vegas. Sometimes I come out winning. Sometimes I just have to laugh it off.