Be the change you wish to see in the world. Smartphones are now essential, so you can't completely avoid doing business with at least Google xor Apple, but you can absolutely give up one-click shopping. I've never used it. I've never had Amazon Prime. It's been multiple years since I last bought anything at all on Amazon. I've used Uber less than five times (and Lyft none), and the last time was over three years ago.

Don't act like these services are essentials. They're nothing but tiny conveniences. And while your individual boycott won't have an impact on their bottom lines, their entire existence depends on hundreds of millions of people in your exact situation, giving in to defeatism or not even caring in the first place.