Just to be clear, it's governments and corporations that are responsible for ecological terrorism. Now we are all suffering the consequences, including a generation of young people with crippling climate anxiety, massive increases in property damage due to climate change, failing crops and millions of displaced people. If you really want to be a eco-terrorist, just start applying for jobs with Shell, BP, ExxonMobil, Aramco, or with the Government - that's where they all hang out.
If you actually want to fight against these eco-terrorist though, then maybe joining Greenpeace would be a good start?