accessible social media managers

I'm looking for a social media manager that has the following characteristics.
1. Is fully accessible with Big Sur and VoiceOver.
2. Includes alt text options for images on all social media networks supported.
3. Allows for imbedded links in posts.
I was using HootSuite but they limited their free option and the paid plans were way too much for what I got. I've tried Buffer and Zoho but both have accessibility issues and no alt text capability across social networks. Suggestions welcome.