I love oats, they're the best. You get the cheapest cereal, healthy, no sugar, plenty of protein and it tastes good on top of it.
Bland? Just add literally anything to it. Banana, strawberries, blueberries, protein powder, chocolate chips, cinnamon, honey, savoury olive oil and salt option, raisins, nuts, peanut butter, Greek yoghurt, any other yoghurt, ginger bread, other cookies, other berries. You can probably even make fucking carrots work.
Hate cooking them? Then just don't, get fine oats and it's ready to eat as soon as you pour the milk in. Or just microwave the bowl, or wait for them to get soft on their own, boil water and pour it over.
Oats are the goated breakfast and don't cost shit.
Depends on how long you've been working. After some amount of time like a year or two you can drop it into a conversation when helping a person "oh, I actually use libre office so I'm not sure where MS put that, let me check" and if they want more info they'll ask. Sometimes they might be surprised that you can actually do this stuff on Linux.