Looking for Feedback: Tool Slowness prediction analysis

Hello Everyone! So I am working on a project for my company in which I have to predict those times in which tool is not performing well(due to many users at a time, or Duo to some holiday week).

I have the data for the tool slowness for the last 1 year (in minutes). I may also get the traffic data on tool for day wise.

Can someone suggest which model I use for my analysis? And what variables I can consider for the analysis.?