c++ using vector.erase deletes the wrong element

I am having a problem with vector.erase, when I try using it its always deletes the last element. here is my code:

size_t k = 0;
for(auto g : graphs){
   if(g.getName() == searchName(command, command[0])){
     // std::cout << "k = " << k << std::endl;
     graphs.erase(graphs.begin() + k);
     return;
  }
   else{
     k++;
   }
}

graphs is a vector of a class graph that I implemented which includes a string inside called name.

The getName method returns the name of the graph.

The searchName function is a simple function which iterates through a vector of strings (representing a command) and return the variable name from it.

p.s i checked searchName several times and it works fine so I am guessing the problem is with erase.

searchName code:

std::string searchName(std::vector<std::string> command, std::string func){
    for(auto e : command){
        if(e != func && e != "(" && e!= ")"){
            return e;
        }
    }
    return "";
}

The user supposed to give the command delete(//GRAPH NAME//) and I need to delete the graph from the vector but nevermind which name I get (supposed it exists) erase always deletes the last element.

I saw a lot of questions about vector.erase but I couldn't fit any to my problem also I tried checking about erase at cplusplus but also couldn't find what I am doing wrong.

My output (who is a command that shows all current graphs and k = something is a check that i tried):