Yes. But only after reviewing the manuscript first.
I must evaluate the manuscript before guaranteeing acceptance to a journal that is indexed in the National Library of Medicine (i.e., PubMed). After I have looked over the manuscript and optimized rigor, clarity, and fit, I can guarantee acceptance to a journal indexed in PubMed. Journal decisions are independent, but I would guarantee that your manuscript will be accepted somewhere. That somewhere would be one of the many journals indexed in PUBMED. I would provide suggestions on where to submit. I will not edit work for any submission to a predatory journal (https://www.icmje.org/news-and-editorials/predatory-journals-editorial.pdf).
No. I optimize rigor, clarity, and fit, but journal decisions are independent.