process of keywording is very buggy and glitches often - how to make it go more smooth

I am seeing this too on macOs 26 Tahoe, Richard. It happens, when I try to enter a new keyword directly in the Info, without creating it before in the Keyword Manager. Simply typing a new keyword into the "Add a keyword" field in the Info of a photo used to create a new keyword.

But now it happens occasionally that the Info panel is losing the focus and text we write is getting lost, just like when we are trying to name a face.

As you wrote, using the Keyword Manager is still working fine, but I can use it only for the most frequently needed keywords, as there are not enough shortcuts for all keywords.

I am now restarting my Mac more frequently, when I am seeing that Photos is starting to lose the focus on the Info. After a restart and avoiding other apps running in the background Photos is more stable.

What I do is bring up the Keyword pane (⌘+k) and add the keywords from there. Frequently used keywords can be put at the top of the pane and they are automatically assigned a key to add them to the photo.

You can add a keyword to multiple photos.

léonie wrote: I am now restarting my Mac more frequently,

I'm doing that, as well, often when Photos refuses some command over and over.I just re-start and it's fine-- Photos acts like nothing out of the ordinary happened.

You can also try Photos WorkBench from the makers of HoudahGeo. It has a much better keyword functionality

https://www.houdah.com/photosWorkbench/

nueve_leon wrote: …I will start typing the keyword "brick wall" - the system will glitch when I hit the letter c and erase all I have typed and them I will end up with the key word "k wall" Why is this happening? and how can I stop this from happening.

This does not happen for me. When you're entering a keyword it should offer options from your list as you type, which saves lots of time. Are you not seeing these options? Perhaps you're interrupting that process?

Do you use keyword shortcuts? You can see this:

Find photos by keyword in Photos on Mac - Apple Support

To use shortcuts, you have to keep the Keyword Manager open, but you can move it out of the way. (I leave a tiny bit of the top visible in at the bottom of the screen.)

léonie wrote: … I am seeing this too on macOs 26 Tahoe, Richard.

I may wait for 26.2! But nueve_leon said he was in 15.

The focus thing is disturbing. I'm editing some pictures with Lightroom, so I'm popping back and forth between apps, I've got Keyword Manager and the Info Window open, and I hit Return expecting to go into Edit Mode, and I've just added a new keyword, or something. It's not obvious which window is active. Maybe the inactive windows should be dimmed a bit. But that's the focus issue getting me in trouble. Oh, also adding those little face name circles, of course.

nueve_leon wrote: …I think that often Photos can't keep up with my typing.

That happens to be, too-- I think due to my bumbling. Hitting Return when aiming for Delete to backspace, maybe-- stuff like that.

A great example, nueve_leon.

Trying to tag some photos with the keyword Aurora resulted for me in three different new keywords - A, Au, and Aur.