When QB 2019 (and any other of the last desktop versions) tanked with the initial release of Sonoma, I started looking for alternatives. Mainly free ones since we had closed the business and I was very recently retired, but still needed accounting software for post retirement work I still occasionally do.
They are very few and far between.
GnuCash is a free, open-source choice, but to say it looks and behaves like an app from the 1980's is being generous. You can't import your QB data, so everything would have to be setup from scratch. I tried working with it for almost a week. It is the most confusing, and difficult to set up accounting software you've ever seen.
There are a number of online accounting choices, but like QB, they're not cheap, and I've never liked the idea of personal data on someone else's server. There's always the possibility of breaches. And being located wherever, any power outage there, or between you and their servers and you have no access at all to your data until it gets fixed.
AccountEdge Pro is supposed to be good. I think that was one where they would import your QB data to work in their software, but it was so much per record. For my small in-home business, my data would be considered miniscule. But when I calculated the cost for them to transfer my data, it was well over $1,200 dollars. Not a chance.
Zoho and Zipbooks are free, but again are online only with no way to transfer in your QB data.
This is a common theme. Free or cost, but requires setting up your entire business data from scratch. It's really no wonder after testing a good dozen free or cost alternatives why QB is the 800 pound gorilla of accounting software.