Full list of server members

Hi, I am a mod of a big discord server with 248k members. One of my role is to ban bots. Seems like the search function in user management are not showing everything. I wanted to see the full list of server members to see all the bots/scammers' names so that I can ban them. Also, please help us to find usernames with special characters. Most of the bots are using it so it's really hard to find. And one more thing, after the last discord update, the members list are laggy. Although, I appreciate the recent members list feature that you guys added but yeah, not full members list are not even showing.