If you're already facing some issues on your team, read Debugging Teams.
If you're struggling with giving useful feedback to your team, read Radical Candor.
If you just want to know how other people deal with their job as Tech Leads, then read Talking with Tech Leads by Patrick Kua (or just watch one of his talks like What I Wish I Knew as a First Time Tech Lead) for a low commitment alternative.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
If you're already facing some issues on your team, read Debugging Teams.
If you're struggling with giving useful feedback to your team, read Radical Candor.
If you just want to know how other people deal with their job as Tech Leads, then read Talking with Tech Leads by Patrick Kua (or just watch one of his talks like What I Wish I Knew as a First Time Tech Lead) for a low commitment alternative.