Is it the landlord or the tenants responsibility to provide a lawnmower for the lawn?
Check your contract as it should say what’s included in the rent / contract, however, Landlords are not legally obliged to supply any equipment or furniture except for a legally tested cooker (and get it tested annually as well as gas producing products eg boilers). Ask your landlord if they will supply you with a lawnmower. You never know, they may be able to get one for you. If not, ask a neighbour or family member if you could use theirs until you are able to get one. If in England, try Freecycle which is free. Contact your Council and see if they have a place where people have donated unwanted goods which they are selling to members of the public cheap. Argos have one for £25.00, I know that you are short on money but if you don’t have any luck elsewhere, Argos is another option. Good luck.