Take the grant writing courses through the following sites and build up your resume, skills and professional portfolio material.
https://www.nonprofitready.org/grant-writing-classes
https://alison.com/tag/grant-writing
https://www.learngrantwriting.org/free-grant-writing-course/
https://ylai.state.gov/online-courses/fundamentals-of-grant-writing/
https://www.eventbrite.com/d/online/free--events/grant-writing-classes/
Once you feel ready, take the exam for certification (https://www.grantcredential.org/) . This is an asset to any organization. Take the knowledge and ask to write a grant for your local library or park system to get a foot in the door and experience with the process. Grant writing is a large WFH segment of the workforce!