Corrected the following mistakes:
- Incrementing TTL & HL on the wrong network interface (rmnet).
- Not removing properties before setting them; changes don't apply as intended without doing this.
- Not waiting until the end of the PREROUTING iptables chain to increase TTL/HL.
- Suggesting to download a huge app (Termux) to check for one thing, which is TTL & HL decrement/increment support.