The practice of suggesting peer reviewers by authors for their work is controversial. Peer review is a key part of the academic publishing process. Usually, qualified experts review submitted articles to check their quality and match for the journals. Usually, editors of the peer-reviewed journals choose these experts. The reviewer’s identity can be anonymous or disclosed depending on the journal’s policies.
Often journals require authors to suggest reviewers during the manuscript submission process. Potential reviewers are independent experts in your field of research. However, this practice can sometimes court controversies and put authors in an ethical quandary.