I have just so much energy (I'm 89) and my battle right now is to do everything I can to salvage the United States of America. I also don't understand what you mean by "fight." If you're talking about demonstrations, the ones that are most important to me are the "No Kings" events.
Go to those then. You have to make your voice heard so that no one can take your silence to mean compliance or assent. And that means not giving silent assent to Newsom when he throws the rights of any group under the bus because if he does it to them he will do it to you too to get what he wants.
It's hard and it's exhausting, but being silent about the erosion of rights for anyone, even when it isn't directly affecting you is what people who want power for their own purposes want you to be. Because if you don't do it for others then it's easier to convince others to not do it for you.