Hi there Wolf and welcome,
I am guesssing you want to try uberX, they are very busy, you don't have time to smoke a cigarette
Yes, i will try to answer your points:
1- I always work when is busy, which from 5am to 10 am or 10 pm-2am, if you can start from 5 pm to 2am , is more than enough
2- If you make £200 piounds , lets say you have to drive 100 miles
3- depends on your skills and how many hours you work, you can make even 40 jobs in one day
4-forget about the car cost per mile, with uberX , you drop someone and pick some one else, very few dead mileage
5-imagine if you have your personal car, you still have to repair that car, insurance, service,
6-insurnace depends on different factors, age, no claim bonus, how long pco license
On short, this is just like any other business, you invest some money so you can make some profit, now depends how much you're willing to invest.
FOr example, you work 6 days /week 10 hours, with an average of £200 daily, you get £1000 /week home after uber commission
From those 1000 cut the petrol, insurance, service, tax.....insurance should around £50/week, petrol £100 and plus how much money you want to put aside for future service and tax man.
£850 every week for 60 hours job that is roughly £3000/month and no BOSS:)