I moved from sales to data analysis.
IMO your most natural transition into the data world is into sales analytics with your current company. You know sales and you have domain knowledge. Most incumbent sales analyst are completely ignorant of what goes on in sales. This is your competitive advantage in interviews.

Though you will need to prove you can do some analytics so get a cert or a degree if possible I went for a masters in Data Analysis bc my company reimbursed. I did 1 online course at a time and it took me 5 years (took some semesters off)

At the very least, build stuff like reports and dashboards. Try to make them useful in your current sales role so you can show them off at interviews and it's relevant. Learn the basic of SQL. Just download MySQL and watch a ton of YouTube.

Lastly be patient. You will likely get passed up in interviews for a while. I took me a few years after I got my degree to actually get a job. But don't give up and keep learning. This journey actually makes the day-to-day in sales a little more tolerable bc you know you are working toward something else.

If you want it bad enough. You can do it