OSM TO IMG for MacOS Catalina 64 bit

Hi
Please excuse my ignorance, i have tried to research but keep coming up blank !!
When I have requested maps in the past I have download maps that could go straight onto a SD card for my garmin GPS which worked great.

I need a few maps and the only option was to download osm_generic_tiles

So I assume I need a program to convert, I have found these but they do not work on my MacBook MacOS Catalina 64 bit.

https://gotoes.org/sales/OSM_to_IMG/
http://www.mapwel.net/osm/osm.html
http://www.javawa.nl/osxinstall_en.html

Any help on my options would be great.

Many Thanks
Louis

Several map providers are listed here:
https://wiki.openstreetmap.org/wiki/OSM_Map_On_Garmin/Download

Many thanks will have a look

i’m on a mac and eventually gave up trying to find “hacking” resources on a mac and ended up taking 50GB of my HD and loading a windows partition on it just to use all of the Win available tools. windows fully detects my gps so i can load everything onto there from windows side without having to reboot into mac portion first.