Learndash Front end (User-Side) Display and Negative Marks Plugin

First Plugin :-
i need a negative marks plugin for Learndash LMS - basic function is, when a student attempts the question incorrect a defined value should be deducted from final score.

example plugin : https://www.wppluginsforyou.com/product/learndash-quiz-negative-marking-plugin/

it should support decimal points also .


Plugin 2 : Front end (user-side) display

this plugin needs to plot the front end results after the quiz in the form of pie chart
EXAMPLE :
LMS by default displays result like : 15 out of 20 correct
now i need a pie chart showing 75% (15 correct questions ) in green color and 25% (5 questions ) in red color

LMS under profile displays the result of all the tests the user has taken and i need a filter there
EXAMPLE:
LMS by default displays like

subject_1 = score
subj_2= score
subj_1 = score
subj_2= score
subj_4 = score
subj_3= score

now i need a filter or drop-down added in this page so when student selects a specific subject, then the scores for the specific subject is displayed.

if student selects say subject_1, then only quiz/tests of that subject needs to be displayed and scores plotted in line-graph.