The Mandalorian (2019– )
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In The Empire Strikes Back, the carbonite freezing process was a Bespin mining tool which Darth Vader and Boba Fett tested on Han Solo before trying to use it on Luke. Fett even expressed doubts about Han surviving the process, showing it was not, at the time, a standard bounty hunter technique.
However, The Mandalorian takes place years after the original trilogy, so it's somewhat plausible that, after being used with success on a high-profile bounty like Solo (with the result being displayed by Jabba for months), the carbonite technique was eventually adopted by other bounty hunters with simplified, more portable equipment.
The carbonite usage is also more efficient for the Mandalorian, who prefers to have multiple bounty pucks for the increased commissions - stacks of frozen prisoners are care-free, and require little space Vs cells with active prisoners requiring food, meds, etc., needing additional space in an already small spacecraft. Edit
It is plausible he prefers travelling by foot, as seen in many of the episodes. And Later using a speeder and Blurrg as vehicles to cover long distances, but only temporarily. It's likely that he can generally land close to his destination and he will hire a speeder if he needs to go farther.
He does gets awarded a Jetpack in the season finale, putting it to great use in both combat and covering distances with ease. Edit