Can’t use finder after Time Machine restore iMac 2014

The fastest and most reliable method of migrating is simply to plug your Time Machine backup External Hard Disk to the new Mac before switching on the new Mac. When you switch on the new Mac it will start Setup Assistant which gets to a point that asks if you are migrating from another Mac, select yes and then select the Time Machine backup.

After the migration is complete then go back to the new Mac and remove the data you don’t want. This is far far easier than the method you are attempting!!

I too have been having issues with my Finder. My iMac uses version Sequoia 15.6.1. I tried having Spotlight rebuild my index. Terminal did say the indexing was enabled. It's been almost 10 hours, and when I check my Terminal, it gives see the message that quitting Terminal would terminate the running processes.

Doing some research, I find these possibilities:

1. The Terminal process is hung or stuck
2. I just quite Terminal with this command: sudo mdutil -i off /System/Volumes/Data
3. It's been suggested to erase the corrupted index, to re-enable indexing, then watch the progress.
4. Mentioned this was almost certainly a corrupt Spotlight database or a drive-level error.
5. Also said to do a nuclear fix and reindex the entire system. I don't want to do more harm than good here.
6. 
   
7. Can anyone suggest what my next steps should be? Thanks!

Yes, regarding your point #7, my suggestion is... Start your own thread (cut and paste your text to a new question, you will tend to get more direct/specific answers and better response time).