Download an Image Collection with a button using GeoJSON

I’m working on a GEE App where users can query for NDVI data of any country or given point, with an specific temporality. I also want the user to be able to download the result map.
I know this can be done with Export.image.toDrive() but this involves clicking on the Task tab, which isn’t visible in a GEE App.
The closest I’ve been to solve my problem it’s through a script I found for another question (I lost the link but I’ll link the script with the license below). In this script, they use GeoJSON to encapsule the map view, but in the example they only use an Image from a Landsat8 collection, and I’m working with a lot more data.
How can I solve my problem?

Link to the example: https://code.earthengine.google.com/83af250cb4f68d038417cde28f538476
Link to my project: https://code.earthengine.google.com/20d6255337c2cba28112bb63e31a2888