Have posted here rarely before - though have learned alot from various posts.
Question: using Nikon 5300 and a ScanDisk Ultra 64GB micro SD card in an adapter. I take anywhere from 20-100 pictures and my screen says "Need to format card". At Longwood Gardens, PA this weekend and certainly didn't want to loose all the shots I had taken.
If I turn off camera, wait some time, and turn it back on it works for several shots, then same message. Of course once I have downloaded pictures I re-format card - but same thing happens. Occasionally I get a picture as attached below. I have to assume (always a bad thing to do) that it a problem with contacts - micro-card to adapter to camera.
Looking for other opinions.
Appreciate the input.

https://www.lightroomqueen.com/cancel-cc-subscription-photos/

The LR Queen states in the linked post above that you should be able to continue to EXPORT images. This is important because you should work with your friend to created an mass-export of your friend's edited work. You can create one mass 50,000 image folder. Use a renaming command for YYYYMMDD so the files sort by the shooting date so she can find images based on 'when'.

Taking LR out of the access method will greatly help things. You can update a computer to run a slideshow of the images. If you can create new LR export presets, resize the images so they fit on a UBS thumbdrive and run a slide show on a TV. Or, get a digital frame and let them run on a continuous loop on a digital frame, or old tablet or laptop.

If you're an active subscriber, just take one of the harddrives and work on the export at home. You can access the LRCAT with your active software. You might need to update the catalog pointers to the file location, but the work should be minimal if your friend kept all the images under a single highlevel folder.

I am trying to solve my leadership "problems:"
I have on my computer drives - primary and backup - just over 65,000 pictures digitized from slides, prints, and progressive Nikon cameras to my current D850. (This compendium includes my grade school graduation.)
Admittedly I am an amateur with expensive equipment.
Current subscriber with Adobe Bridge, Lightroom, and Photoshop.
To save coping space in my brain that is somewhat fragmented I avoid having to create an app managed Catalog (required by Adobe) that adds a additional layer of worry and management. No way I am going to import 65,000 pictures and hope for the best. I understand this is necessary to maintain a "sidecar?" with the non-destructive edits of my JPG and RAW pictures.
I have limited myself to Adobe Raw for 99.9% post process.
My file organization is simple i.e. 2021-03-31 Trooper Dog at the Doggie Beach.
Making "destructive" edits to my RAW pictures is not a problem and to me a positive as I know that is the way they will present when copy pasted or viewed off my computer without the bother of exporting.
I have but not yet gotten into: NX Studio; Helicon Focus; Luminar AI Topaz DeNoise AI all waiting on free time from my way too busy retired status. (The problem expands to fill the time available to solve it.)

So, kind fellows I seek your suggestions for an editing program that does not require a catalog, makes destructive edits, and has an easy to follow workflow, and a readable layout that does not require squinting.

Thanks in advance. Art in SW Florida