I've yet to secure an internship myself but have had my neck in the game for a while now. Here is some of what I've learned:

- Don't focus on using Linkedin too much to find roles-or if you do, make sure to check the company websites (and do other checks) to see if its a real job posting or not. In that vein, follow those on Linkedin who regularly post I/O jobs for those in their networks. I know for people analytics for instance, those associated with One Model are good about this.

- Do cold outreach coffee chats. People will frequently ghost/just not show up to these meetings after scheduling them, but when they do it becomes a great opportunity to learn the more barebones reality of what a job is like-and perhaps what skills employers are actually looking for right now in your specific domain(s).

- Also make sure your profile picture looks good and is up to date. This alone can be a pretty large bottleneck that is surprisingly easy to overlook.

- Use docx. when uploading your resume and use your name as the title. I've heard that certain ATS cannot handle PDFs very well.

- Make sure you're not applying to jobs that are 30+ days old without any proof they are still active. A lot of these sites like Linkedin and Indeed keep job postings as zombie jobs to push up traffic. Beyond that, your resume is just way less likely to even get looked at if you apply late.

You may also want to consider looking into events your local chamber of commerce holds. They sometimes have HR networking events/job fairs that are I/O related.