Understand the idea
Walls, distance and interference can reduce wireless signal quality. Moving the router may help more than changing unrelated browser settings.
Put it into practice
Place the router in an open, central location where practical. Compare performance in the same room before buying extra equipment.
Know the limits
Avoid placing networking equipment where it can overheat or where power cables become a trip hazard.
The wider context
Connection tests are most useful when they are repeatable. Compare similar conditions and record the time of a problem. Faster networking can improve responsiveness, but it cannot create reliable returns or change the rules of an online activity. Avoid tools that require unnecessary device access.
Your next step
Use the practical step above only where it fits your situation. Before an account-specific action, check the current instructions from the service or device provider involved. Write down what you observed and what remains uncertain; that makes a follow-up question more useful.