Okay, but Winry Rockbell is so important. Winry should be praised for her strength in Fullmetal Alchemist - she’s probably one of the strongest characters in the series, despite, or well especially, because she doesn’t use alchemy.
Alchemy throughout the series is used by characters as a coping mechanism and a solution for problems otherwise thought unsolvable. Vase shattered into a million tiny pieces? Solved. War? Bring in some alchemists and no one stands a chance. Your mom is dead? Want to bring her back? Not guaranteed, but if you want to try, the option is there. Sure, when Ed and Al use human transmutation it back fires and everything is worse, but - as a whole, alchemy is used to fix things.
Winry does not have that luxury. When her parents die she does not even have the skills to attempt to transmute them. When Ed and Al are torn to shreds, she can’t draw a circle and make it better. Neither can Ed. She is completely helpless to the hand she has been dealt, and as a child, trauma like this can be the start of an adulthood riddled with questions and anxiety.
But, Winry does find a way. While there are many things that Winry cannot change, she cannot fix - she does find something she can do. She builds automail. Automail gives her the tools to make a difference - she is a main reason that Edward is able to continue life with the ease he does, and the strength to combat the forces which seek to take life from them. It’s almost a mirror to Scar’s brother’s sacrifice when one really looks carefully. Winry is Ed’s Arm. Winry is the catalyst for change.
In FMA we’re initially invited to use alchemy as our own coping mechanism in the fantasy. However, if one pays attention, automail is the metaphorical statement that we should rely on our own strength and the power of our loved ones to make changes in our lives. Even Ed declares it when he laments over not being able to save Nina - he’s just an ordinary human. When we are powerless, we can’t just clap and fix everything - but, if we take time and focus, we can build our own strength. With such focus we can also determine if things are capable of change. We learn the limit of our power and when it is time to ask for help. We’re all ordinary humans, after all. We should all try to be more like Winry.