It won't make that.

There's no way it will convert at 1%. Not keywords like those.
The vast vast vast majority of people searching for "remove bg", "remove background" etc are looking for a quick/free tool.
And base pricing is not $32/mo.
You get 1 credit free. Almost everyone will use that.
Very few will sign up for the 40 credits per month plan at 9 euros per month let alone 200 credits per month at 39 euros(The $32 one you refer to)
They will get plenty signing up of course, but not 1%
Most that need 2-3 images done will just create multiple free accounts.
A few that have more will just pay the 9 euros for 10 credits.
Companies will sign up to the monthly credits and graphic designers with a lot of work.
Companies that work with images etc. Freelancers that work with images.
Still a great business, but there is NO WAY that 1% of the listed search vol on this are signing up for a $32/mo plan, let alone this being the "worst case". It's not even the best case
I mean, even with an amazon review site you're looking at a CTR of 0.5% to 3% depending on your layout and the site. And that's CLICKS to amazon, not signing up for a $32/mo subscription to remove a background.
Of those around 10% buy. It's been years since I've had amazon review sites. I don't think I even tracked CTR from the site. I just remember the conversation rate after clicking through to amazon was between 5 and 15%. Usually averaging around 10%.
I maybe had 3-5% on some keywords back then, but you're not going to get more than that. A super highly targeted email opt in is going to convert at 40%. Most people searching for stuff on google are not clicking through to ads and certainly not buying stuff.
B2B keywords are different. There's going to be higher conversation rates there, but consumer keywords have very low clickthrough and conversion rates.