My SMART convertible does not start 🙁 HELPEEEEEEEE

Hello I’m new here and say good day to all those reading this thread…………… the following problem: after about 14 days of service the SMART Cabrio Bauj. 2000 my wife from today to tomorrow did not start without advance notice….1. Ignition key turned = slow turning of the starter but no jump-on ( I know possibly LIMA fixed rusted I thought…) Bridge= no result when starting the starter still turns only very slowly ….. after a few days the battery was so empty that I had to break my wife into the SMART over the trunk of the car New Battarie jammed, but the starter is now at all no longer turning, also no longer very slow?????….if I now turn the key I did not have light, all the e-controller funzen without limitation but when starting it buzzes back in the engine room as long as the ignition is on, (default of the clutch so this Shhhhhh sounds can be left out before) but I know how to get rid of the test.