There are 3 steps involved in choosing the best journal:
Step 1: Make a short list of target journals.
Step 2: Gather information about each journal's aims and scope, target audience, publication management, open access options and citation metrics. Take detailed notes during this step.
Step 3: Compare the information you've gathered for each journal and select the one that is the best fit for your paper, your individual circumstances, and the ethos of the way you would like people to access your work.