A chainsaw is one of the most dangerous power tools out there and requires a significant amount of knowledge to operate correctly. If you're planning to use your chainsaw more often or in new types of wood then it's likely that you'll need a stronger and sharper chain. This will help you cut through the wood and minimise kickback, which can be incredibly dangerous given the high speed that your chainsaw is running at.
It's important to note that you should always check your chain tension before using it as over time it will stretch and loosen up on the guide bar. This isn't ideal as it will reduce the efficiency of your chain and can be a serious safety issue as it can then come off the bar altogether, which is a major problem. You can find more information on checking and tightening your chainsaw by referring to the manufacturer's manual which will provide bespoke instructions specific to your machine.