I have a 'granular breve' what can i do

I just discovered it by this link https://patient.info/forums/discuss/foreskin-stuck-to-penis-head-by-frenulum-685250 What can i do to stretch it, i can only go past the glans when flaccid but the other side can't be pulled back, I'm underage and in the UK so expenses are not a matter, of course but there is smegma, and unable to clean the other side, I'm nervous to tell my parents and the glans is tilted so it makes a weird feeling when i pull back

Also, is it necessary and can i cut it off?

Also, is it necessary and can i cut it off?

Okay, the best advice given on the link you provided was by Tangki2 - he is an actual Urologist - unfortunately he is no longer active on this site.
The vast majority of issues with tight foreskins (Phimosis) can be resolved by doing stretches which you start real easy with then build over a period of months until you are able to expose the entire head of your penis much more easily.
When you say the ‘other side can’t be pulled back’ - without seeing what you mean it is difficult to know what you mean by this. There are two main causes: yes it could be your frenulum is tight or even short, this is something you remedy by doing the regular stretches; or, it could be due to a skin adhesion, and often these work their way lose in their own time. Here are the essentials:

  • What age are you?
  • YOu must NEVER even think of cutting anything ANYTHING anywhere on your body - thay all have a specific function
  • do a search for the following keywords as this details the kinds of stretches you would need to be doing
  • Wiki - How - 3 Ways to do - Phimosis stretching