Perhaps if you asked yourself what your customers would want. There is no criticism in anything I say, so let us role play.
Coffee with my bacon roll please
Certainly, what would you like?
A Ristretto please.
Sorry, I cannot do those
Ok, how about a Cappuccino
No problem.
or this scenario
Coffee with my bacon roll please
Certainly, is that black or with milk?
The second scenario is because folks have come for something to eat and the drink is secondary. For this reason you do not have an espresso machine but a filter coffee machine. Simple, you buy pre ground coffee. Add it to the machine, add water and it drips though the coffee bed into a glass pouring jug. Quick and easy and will satisfy the coffee needs of most of your customers. If you get the odd person who is a coffee nut and wants a speciality drink, when he sees the level of equipment you have he will realise the limitations.
Have a look ,locally for tea and coffee merchants. They will often supply you with a decent filter system for nothing as long as you buy your coffee through them.
https://www.nisbets.co.uk/buffalo-filter-coffee-machine/ct815