Is your trackpad having problems clicking? Is it clicking but the laptop isn’t responding to the click? Or that you have to push really hard to get it to click?
There are a few reasons why your click may not be working any longer. It is possible it could be something like a swelled battery, loose screw, or debris but most likely is that your trackpad is failing due to wear and tear.
Many videos and instructions advise you to make an adjustment to the screw under the trackpad to deal with this non-clicking problem. This tends to work because it puts more pressure on a certain part of the trackpad that makes the “click”.
But I recommend that you do something even better than that! I recommend that you make an adjustment to the trackpad itself (not the adjustment screw) so that you will be (effectively) giving your trackpad click a new life. And this repair is free!