...
https://support.apple.com/en-ca/112434
Copying Data From Old to New HD
Attach the SSD drive to your Mac using a USB to SATA adapter.
Using DiskUtils, format the new SSD drive as APFS with GUID Partition Map.
Clone the old drive to the SSD using Carbon Copy Cloner - https://bombich.com.
Replacing HDD with SSD
Parts
Instructions
https://www.youtube.com/watch?v=ZbnhuZoxkI8&t=5svzhjGV-ULMk
https://www.youtube.com/watch?v=vzhjGV-ULMkZbnhuZoxkI8&t=5s