I know a fair few people who have broken the rules all along, and none of them has had COVID.
I'm not convinced it's even quite so easy to catch it as is claimed. I've been to supermarkets every day, have never worn a mask, have not used hand sanitiser (have washed my hands when I get home, as I have always done), have handled money, touched my face repeatedly, etc. I have even been known to eat a packet of crisps in the car, i.e. before washing my hands.
While it can obviously be hideous for some people who contract it, it's very much not the case that you will definitely contract it unless you hide away, disinfect your shopping bags, wear plastic gloves, etc, etc, etc.
I would probably do T&T if I had a smartphone. However, I haven't got one (just an ancient desktop), so I can't.