I was fired after my performance declined due to personal issues. Should I lie in my interviews?

I got fired from my last job which I only worked for 5 months. The first three months were great and I was killing it, but something happened in my personal life that really affected my work (couldn't get myself out of bed, etc) and the last two months I was making mistakes I would never make which led me to being fired. Since I was going through it, I decided to actually take the time off to recover so it never bothered me too much since I always knew that the firing didn't define me it was just a bad spot in my life. Although, I have no idea how to approach this in interviews. When they would ask me why I left my last role, I would loosely say it wasnt a match and decided to go different ways but they would always ask or at some other point in the interview process, "were you let go?" and when I would say yes. I would usually get rejected. Some other interviews I would actually lie and say it was a contract position or I decided to leave, etc. and am I going much farther in interviews but I am worried that this lie would be exposed, since I would need to use fake references if I do that. For context I am in corporate accounting with over 3 years in experience but I feel like I am taking a huge step back in my career from this firing. Any advice on how I can frame this? Or am I better of lying about this?