Need Help making a Bode Plot from Multiple text files

I’m having trouble figuring out how to make a single node plot with 19 text files. Each text file has 3000 rows and 3 columns (Column 1 = time, Column 2 = input, and Column 3 = response from system). Each text file has a given frequency (in the file name). I was able to create basic plots for each text file with the amplitude on the y-axis and time on the x-axis. I do not know how to create a bode plot from the data. I am not allowed to create a transfer function from the data and make a bode plot from that.

Here is my current Code

Thank you in advance