Either the battery is wearing out or failing....not surprising if it is the original battery as it could be seven years old. Or you have some sort of software issue which is causing excessive power utilization. It could be a combination of the two.
FYI, the Battery Cycle Count is meaningless unless it is very high.... nearing 1,000 cycles, otherwise ignore this value. The more important attribute is the Battery Condition. If the Battery Condition shows "Service Recommended" and you are having issues, then it means it is time to replace the battery. Just because the Battery Condition is "Normal"....it does not mean the battery is healthy. If Monterey has the Battery "Maximum Capacity" attribute, then what is it at? With everything being equal the battery should provide sufficient runtime until the "Maximum Capacity" value drops below 80%. However, even if the battery is well above all these lines....the battery could have a hardware fault which will only be noticed when the laptop is under a heavier load. It is not easy determining the true health of the battery if none of these things are triggered although I have developed a technique for better gauging the health of the battery by running a series of tests I've created to closely monitor the raw battery information which can provide clues to an underlying hardware issue with the battery.
You can try running the Apple Diagnostics to see if any hardware issues are detected, but it is rare for the diagnostics to report a problem even when a hardware issue is confirmed through other methods.
It is much easier to look for possible software issues. Run the third party app EtreCheck and post the complete report here so we can examine it for clues.