Falling, Dropping Hard Drives

I dropped my external WB passport external hardrive approx 2 feet onto the floor and it needs the head changing inside the one which hovers over a disk. I’ve been told that it is possible to extract the data if the head is fixed but I need it urgently as I am a 3rd year student at university and have a deadline may 8th. My queries are the cost of the fixing as well as how quickly it can be done.

While shutting down my macbook, a hard object fell on top of the location of the hard drive on my macbook. I can boot from the hard drive using an enclosure and get to the log in screen but cannot log in as the screen freezes. There are no clicking or any other noises, the drive appears to spin.

1TB Seagate Backup Plus Slim. Still had around 500gb free. Was using it while editing on Final Cut Pro X as a storage for my library files. Got Apple colour wheel and had to shut down laptop without being able to eject external hard drive. When computer restarted the hard drive did not show up on the desktop or anywhere else. No noises or beeping and there was still power on the HD. Is it recoverable and how much might it cost?

The diagnosis has been completed on your damaged SSD and the technician involved on the recovery has advised the following:
Diagnosis results have shown that the VRM controller unit has failed. The technician has advised the next stage of the recovery process is to replace the complete VRM controller unit, rebuild the SSD and then attempt to extract your data.

I have 2 (old) hard drives. A Maxtor from early 2000s and a PicaOne FLS-U2F-250. ThePicaOne spins and clicks but doesn’t show up on my Mac.
Someone recommended using Fields Data Recovery and they were terrible and ripped me off. They said they’d recovered 11% of data but didn’t even include a USB stick when they returned it. I wish I’d never heard of them.
Can you help please. I have a lot of jpegs and photoshop files of my work.

3TB Desktop HDD. Powering on, making clicking noise, not appearing in “My computer” on PC.

Problem began with a Bad_system_config error which would not start up Windows 10. Restore system and automatic repair systems both failed and gave a cyclic redundancy check message. Took hard drive to computer repair shop and attempted to open the files on another computer which failed. An attempt to scan and fix the drive with HGST DFT for windows software and the drive was not recognised. Attempt to scan with crystal disk software also failed. Not sure what else can be done. Hoping that you can help. Model of hard drive is HGST 5K1000.