What hardware and software do you use for digitizing your documents?

I’m looking for solutions to digitize hundreds of paper documents, ideally the end result will be searchable with OCR and I won’t be locked into any proprietary software / services. Any workflow tips?

I’m not opposed to using a scanning app on my phone, but so far the ones I have tried are fairly slow, and require manually identifying the corners on nearly every page.

EDIT: I ultimately chose Nextcloud and my phone to scan documents. Nextcloud includes an excellent document-scanning feature in the app.