What are good bridging options for amputees or people with disabilities?
There are mechanical bridge alternatives that you don’t need to hold down. Examples include a bean bag on the rail and a very short-handled and heavy mechanical bridge you can use for regular and elevated shots. You first place the bridge down on the table with your good arm. Then you place the cue on the bridge with the same arm and make slight adjustments as required.
Some other ideas can be found on an AZB thread dealing with this topic.
If you search for “billiard handicap” bridge online (Google, E-Bay, Amazon), you can find some commercially-available options.