1. Be Positive and Fair In-Game

• Play Clean: This is the most crucial point. Never use cheats, hacks, or any other unauthorized software. Steam Anti-Cheat (VAC) and Overwatch are very good at detecting fraud, and this leads to a massive loss of trust.
  
• Don't Get Reported: Avoid behavior that might cause other players to report you (e.g., griefing, insults, intentional trolling). Many reports are a strong negative signal.
  
• Be a Good Teammate: Communicate positively, help your team, and avoid being toxic. Good ratings from other players can positively influence your Trust Factor.
  
• Stay Until the End of the Game: Don't leave matches prematurely. This can be counted as negative behavior.

2. Build Your Steam Profile

• Verify Your Email Address and Phone Number: These steps show Steam that you are a legitimate user.
  
• Link Your Steam Account to Other Platforms (Optional): While not directly for the Trust Factor, linking to social media or other gaming platforms (if offered) can show that you are a real player.
  
• Add a Payment Method: When you make purchases on Steam (games, in-game items), it signals that you are an active and trustworthy customer.
  
• Increase Your Steam Level: By collecting badges, crafting cards, and owning games, you can increase your Steam Level. A higher level can be an indicator of an active and engaged user.

3. Active Gaming and Trading

• Play Regularly and on Different Maps/Modes: Active gaming behavior that isn't limited to just one game or mode can have a positive effect.
  
• Use the Steam Market and Trade Items: If you use the Steam Market to buy and sell items or trade with other players, this also shows activity and trustworthiness. Of course, ensure you conduct fair trades.

4. Avoid Negative Off-Game Behavior

• No Steam Community Violations: Adhere to Steam's rules in forums, comments, and groups. Spamming, attempted scams, or abusive behavior will be punished and negatively impact your Trust Factor.
  
• No Chargebacks: Avoid canceling purchases or initiating chargebacks. This is considered a very negative signal.

Important Notes:

The Trust Factor is an invisible value: You cannot view it directly. It's calculated in the background.
It's a long-term process: Improving your Trust Factor takes time and consistent positive behavior.
Comprehensive consideration: Steam considers your entire behavior and history, not just individual actions.
By following these points, you can gradually improve your Trust Factor on Steam and thus foster a better gaming experience for yourself and others.

Good luck!