Yellow sticker tips?

I don't go shopping late night so don't know what happens then but - Morries sell Bags of food in the evening on some App ? Too Good to Waste so I imagine there'll be yellow sticker stuff in them. Sunday afternoons used to be my favourite time - closing at 4 - but it was so popular that it became too much of a hassle to get near the reduced stuff and there were always a few pushy ones who would grab everything, throw it in their trolley and sort through it later, meaning the polite shoppers, like me, didn't get a look in. One family were banned from the store for that.
I recommend getting to know your local store. Pop in every time you're passing and check it out. In mine, they do the first mark down before lunch. Nothing more happens until after 2 when all the lunchtime shoppers have gone back to work. Fresh fish and meat is often marked down again after 2. I buy liver/kidneys for the dogs at that time - about 30/40p a pack - about 25% of normal price.
Chilled products are reduced again late afternoon . then, presumably, giveaway prices later that evening. 95% discount is the best you can hope for.
I have a price in my head that I will pay - eg. Two fillets of salmon £1. Any more and I leave it.
Veg can be reduced at any time - sometimes there's nothing reduced.
If you see something reduced, but still more that you will pay for it, check the Use by date. If its today, it will be reduced further, if its tomorrow it won't be before tomorrow.
I'm told that Aldi reduce by 70% about 7.30 in the evening. Don't know about Lidl - or the other supermarkets.