Don't rely on your memory. Use a manager to generate and store unique, complex passwords for every single account.
A combolist is a compilation of username/email and password pairs that have been leaked from previous data breaches. The "215K" in the filename suggests the list contains 215,000 sets of credentials, specifically curated from US-based targets ("USA") and claiming to be high quality ("HQ"). How These Lists Are Used 215K HQ COMBOLIST USA GOOD FOR ALL.txt
If your data is part of a "Good for All" list, it means your digital footprint is at risk. Here is how to stay ahead of the curve: Don't rely on your memory