Hi
I use a 5TB Western Digital Passport external drive - they're cheap-as-chips now (less than US$150 or so). If you install the DJI Assistant 2(Consumer Drones) software from the DJI site, the software detects your external drives (including your drone), and creates directories on your desktop ready for easy file transfer. You can access this software (which also services the
DJI Mini 2)
here.
You can then delete your MicroSD files. Your low-res files on your iPhone/other device DJI Fly Album will still be in place on your phone, ready for processing of the low-res images for social media posts.
On your Mac/PC - DaVinci Resolve has top-of-class colour management/grading, so RAW/DNG files can be processed, but it also has a remarkably efficient DAM (Digital Asset Management) element built in. As the basic version is FREE to download - I've nabbed that. Version 18 is now available as a Beta.
This is the version that I am using. You can see an example of how the DAM element works
here. If you want to be really smart, you can learn how to use 'Smart Bin Filters' - these make image management a dream. A useful training video on this can be found
here. DaVinci Resolve media management can easily organise your files in a date-related manner. Go to 1:40 on
this training video to get an overview of Smart Bin management. You can create as many Smart Bins and sub-bins as you like.
DaVinci Resolve colour grading works a treat. It has (at least some) DJI drone camera LUTs built-in, but just experimenting with the myriad of LUT options means that you can speedily find an approximately-correct colour grading, and then fine-tune it from there.
I've learned not to upload any full resolution files to my iPhone, as the space consumed is enormous (and then iCloud duplicates this space requirement on every other Apple device that you have linked to iCloud). Easier (for me at least) to place on an external drive and then access this with Davinci Resolve. Note - you may need a powered hub (or direct connection of your WD Passport to your PC/laptop) in order for the drive to work.
On the DJI App Album, I process the DJI Album files (which are low res) using (FREE) nifty 3rd-party software to generate 3D/Little World-style images like
this. A combination of mobile app Google Street View, and Theta+, allows easy generation of these.
Hope this helps.