This is why it's important to instill the idea of working in autistic children as early as possible by expecting them to do chores around the house and outdoors, including them in volunteer work and asking them to clean and take care of their own room and bathroom or other space. As they get into middle school and high school, talk to them about what kind of job they might want when they grow up, and encourage their ideas, even if they seem unrealistic to you at the time.
Our son has gone through some challenges with having jobs and finding new jobs, but we have continued to encourage and support him, and have not given up. Keep researching and networking and doing volunteer work while job-hunting.
For more about the workplace and people with autism, see my book, Six-Word Lessons for Autism-Friendly Workplaces. I wish you the best in finding work for yourself or the autistic adult in your life.