I think my beardie has tail rot!

[ItzZed]

I noticed this today while giving her a bath I thought it was natural before but it seems to be getting worse. Anyway I attached some pictures. Also she has this weird dark patch on her back I’ll include too, I assume it’s just her shedding.
I have not once taken her to the vet in the past 3-4 years since I got her, I have no money and I’m trying to convince my parents to do a checkup. If you see anything wrong let me know so I can help her.
https://imgur.com/gallery/ZaWl23H

Edit : I forgot to mention that originally I thought the top was just some shed but it’s been like that for a few weeks or more.

 

[AHBD]

Hi there, the patch on the back is just uneven shed, very common and not a health issue. The tail tip is dead and may fall off on it's own. What you can do to be sure it doesn't spread is just snip it with a sterilized pair of sharp scissors. Snip just above the dead area to be sure to get all of the affected area. Wash the scissors with soap + hot water before + after of course. The tail does not feel pain very much at all and most babies that have tails nipped off by siblings are barely affected + continue eating the same day. Snip it very quickly , after it's cut it will bleed slightly but just dab it with a betadine/water soaked cotton ball or soft cloth/paper towel. That will take care of it, once it's dry apply neosporin.