In your present situation, you can consider grinding off all three teeth and connecting them to make three porcelain teeth, which can play a fixed role. If the root canal is blocked, see if the root tip is ok. If there is no problem, you can make porcelain teeth directly.

Tooth looseness depends on the degree of looseness. If it is loose to three degrees, it must be pulled out. Look at the reason for the looseness. If it is caused by periodontal problems, you can do periodontal treatment first without pulling it out.