sybok
The log you mentioned is definitely a good choice.
authentication logs to analyze issues I’m having
Could you describe the issues in detail?
Are they related to log in to your session or some other authentication (e.g. in a running dedicated additionally installed app such as ‘zoom’ or others)?
Also, output of ‘inxi -Fxz’ could help (you may have non-default desktop); if already posted elsewhere and not changed, please link such a post.