You can try fanfiction websites such as Archive of Our Own (AO3). It has a large collection of various fanfics and might have some sub beca lemon ones. Another option could be FanFiction.net, although you might need to do a more thorough search there.
One good sub beca fanfic could be 'Sub Beca's New Adventure'. It might explore Beca in a submissive role in a unique situation. Another could be 'Lemon - Tinted Sub Beca' which could add a bit of a spicy or different twist to the sub Beca concept. There could also be 'Sub Beca's Hidden World' that delves into a part of Beca's character not often seen in the normal storylines.
You can try Archive of Our Own (AO3). It has a vast collection of fanfictions, and there are likely many works about Beca and Jesse there.
You can find Beca Mitchell fanfic on Archive of Our Own (AO3). It has a large collection of fan - created stories related to various characters, including Beca. Another place is FanFiction.net. There are many writers who post their Beca Mitchell fanfics there. Just search for 'Beca Mitchell' on the search bar of these websites and you'll be presented with a list of available fanfics.
You can try fanfiction.net. It has a large collection of fanfics from various fandoms, including those related to Chloe and Beca. Just use the search bar and type in relevant keywords like 'Chloe Beca' and you'll likely find a bunch of stories.
I'm not sure where you can find 'beca broken fanfic'. You could try searching on popular fanfic websites like Archive of Our Own or FanFiction.net. Just use the exact title in the search bar and see if it pops up.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of 'sub harry fanfic' stories. Another option is FanFiction.net, which also has a wide range of fan - created content including many related to Harry Potter. Wattpad might also have some, though it has a more diverse range of content.
Well, I haven't come across a ready - made fanfic with exactly Aubrey, Beca, Chloe, Dom, Sub and Lemon. But you could start by reaching out to the fan communities of the relevant works. Maybe post in the forums asking if anyone knows of such a fanfic. Another option is to follow some prolific fanfic writers in that particular fandom and see if they might write something like this in the future.
AO3 (Archive of Our Own) is a great place to start. It has a vast collection of fanfics from various fandoms. Just type in 'Aubrey uses Beca heartbroken' in the search bar, and it might show you relevant results if such fanfics exist there.
One plot idea could be that Aubrey, Beca and Chloe are in a music competition. Dom and Sub could be new characters introduced who have different musical styles. Lemon could be the name of a unique instrument or a special music venue. The story could revolve around how they all interact, compete and collaborate in the context of the music competition.
Archive of Our Own (AO3) is also a great place to look for 'barry allen sub fanfic'. It has a well - organized tagging system, so you can easily filter through different types of stories. There are often some very creative and well - written fanfics about Barry Allen there.