Almost all Lobbying is not bribery. Lobbying means using your resources to influence politicians by campaigning and meeting up with them. But there is no direct exchange of money, which would be bribery. Actually lobbying can be a useful part of the democratic process and it can also be done by civil rights organizations or environmental organizations that are non-profit.

I know it can be comforting to simply say "all those politicians are corrupt" but doing so will only help those who are actually corrupt.