Issue with accordion in EJS

I'm trying to iterate over my database in EJS, and render them as an Accordion. There are 2 issues here. When I expand an individual accordion, they all expand. To solve this I tried to assign a unique id (by assigning a variable 'i' and then incrementing it at the end of the loop). But this also doesn't seem to work. Not sure what I'm doing wrong here.

Below is my EJS template code.

<% for(let li of list) { %>             <% let i = 0; %>                 
                     
                         
                                                              <%= li.title %>                                                       
                         
                             
                                 <%= li.body %>                              
                         
                     
                 
                 <% i++;%>                     <% } %>