Sorry for your experience but I assure you we do have freezers. Freezers are in fact very common, just not in small apartments where space is at a premium.
Vast, American-style double-fronted fridge freezers are uncommon, but I’d venture a guess at most UK & Western European households having a freezer of some sort - either a tall fridge/freezer unit or two separate under-counter units.
I have a cup of black coffee once a day, usually made with an aeropress. On weekends I might have black tea instead, depending on how I feel.
I try not to have my first cup before about 10.30-11.00am, so my body has a chance to wake up naturally. I don’t really know if there’s any science behind that, but I feel like it helps make me less reliant on coffee to get me going in the morning.
I mostly just have one cup a day and then switch to Barleycup (caffeine-free hot drink) in the afternoon, but on very busy days I might have a second coffee around 4pm. I try not to, because if I do that too many days in a row I can feel my body starting to need caffeine to operate at a baseline level.
If it gets to that point, I avoid coffee for a few days to ‘reset’. Again, not sure if there’s any scientific basis for that but it seems to work for me.
In my experience, people build up a tolerance to caffeine pretty fast. It doesn’t take long to go from ‘a cup gives me a boost’ to ‘I have no energy until I have a cup’, which are very different things. I see people saying they drink an entire pot per day or more, and I have to wonder if they even get any benefit from it at all, besides holding off the headaches and fatigue of caffeine withdrawal.