I have a lot of tech set up to help me write more, write better, and get more done. And even so, I recognize that all of the bells and whistles aren't what matters. Especially when I see a post like the recent one in a writer's group I belong to where the author suggested it was time to quit.
The post in question was from a writer who, like me, is in her tenth year of indie publishing. The post was a long list of complaints, including that her laptop broke in 2020 and she has been writing on her phone since.
I didn't respond to the post, even though I was tempted to do so. Everyone else piled on, giving the OP advice about marketing, restricting herself to one genre only (and a specific niche within it), offers to review her covers, and a million other things in her post that didn't stick out to me.
Had I responded, I likely would have suggested that she invest in a cheap bluetooth keyboard to make writing on her phone easier. She's got Google docs at her disposal for free, and a keyboard like the one I'm using right now will only set her back about $15. And that's for the cheap kind that runs on batteries and doesn't fold up. They can take a good beating--just don't slop any beverages on them (that's what usually happens to mine).
Ultimately, though, I recognized that post for what it was--regular venting. The OP has everything she needs to not quit--anyone who writes on their phone and keeps going has the hustle required to be a writer.
Sales and advertising? Those are different from the actual writing part. Here are some of the different things I have in my writing arsenal. None of these cost more than $100.
Do I NEED all of this to write? No. Various notebooks and beloved ink pens (I'm currently obsessed with Pilot Frixion pens) are truly all I need as long as I still have hustle.