and I have basic programming knowledge, however I have not been able to correctly install it to view the timeline plugin. I would kindly appreciate help regarding this problem with maybe a different git tutorial or related. Thank you
Earthdata Search doesn't have it's own API, its a UI that sits on top of CMR (https://cmr.earthdata.nasa.gov/search/site/docs/search/api.html). Earthdata Search did make the timeline component itself a separate open source tool (https://github.com/nasa/edsc-timeline) that can be utilized in other projects.
If this is not what you're looking for, CMR does offer an API that returns timeline data, documentation for that can be found here https://cmr.earthdata.nasa.gov/search/site/docs/search/api.html#search-response-as-granule-timeline