Being the most competent and best qualified for a position may not get you a job interview if your resume doesn't present you at your best and the way the organization expects. On the other hand, a well–crafted resume, cover letter, and supporting documents won't do much good if you don't know how to effectively present what you have to offer during the interview process.
Demonstrating that you can deliver what you say, on the phone, in person, or on Zoom will allow you the best chance for success in the shortest time with the least amount of angst.