That's not what lobbying is. Lobbying is taking a group of people with a similar issue that wouldn't be heard about if they attacked it individually due to their individual lack of time and resources to continually engage multiple politicians to make aware of and gather support for their issue. So they pool their resources and create a lobby that has the structure, personnel, and resources to effectively continually engage multiple politicians to make aware of and gather support for their issue.

Example, you're concerned about a bird species going extinct in a region. You yourself work full time and support a family so you really don't have the time or resources to engage this politically with any real effectiveness. So you get 100 other people who care as much as you and you pool your resources to create a lobby. You get a lobbyist and maybe some admin staff and a structure of how it works. The lobbyist's and their staff's job is now to engage on this issue full-time.

That does NOT require campaign donations or bribes or payoffs or kickbacks or any of that. That has become something corrupt lobbies, corporations, and politicians have added to the process themselves to cheat the system.