What is the best solution to fix the indentation on my nose?

You have a challenging problem that absolutely needs cartilage from septum or rib as well as careful release of scar tissue, and probably a small secondary procedure for the scar.  I would carefully select a surgeon with experience in revision rhinoplasty.

VERY difficult problem......especially if you want to do something "small". Without being able to assess the actual tissue characteristics one cannot know what might be best. My guess is this area is actually damaged scarred skin and for a complete change you could even require full thickness replacement of the subunit of skin there. Perhaps a well performed full-thickness skin graft of the entire subunit or even a subunit reconstruction with nasolabial flap tissue.There is a premier nasal reconstruction surgeon in Chicago you could see for a super experienced evaluation.

You have a difficult problem with no great solution.  The indented skin is damaged skin and filled may stress the skin and cause it to necrose. Excising the skin will usually leave a poor scar on the nasal tip.