She doesn’t have it all anymore

Servus meine klr spinnt total. jumps bad to not at all. sometimes she does not run in the standgas machine. then she goes out as soon as she comes under 3000 turns. carburetor is set ok. valve. new control box is also dirn. my screwdriver cup has given up, my workshop has also. has had such a thing before? by the way, I am mai and have not yet driven with it for a kilometer. =(((