Hello mam.. The ideal and natural way of treating the misaligned teeth is braces treatment only...you can also go for clear aligners or invaslign which is more esthetic The other treatment option should be veneers and crowns however it needs reduction of the natural teeth structure...concerning your age this treatment is not advisible

Well in 3months braces treatment is not possible. Dentist needs time to align teeth. Go for invisalign or clear aligner Else simple scaling polishing and bleaching Go for alignment later

Please only braces for this particular case from what I see.

Go with veneers safest option, other than that you can get composite filling done.

Go for the clear aligners or Composite filling or veenering the teeth