Dryer does not get warm

@lionnely The three most common causes for a dryer that runs normally but does not heat are the thermal cut-off fuse, high-limit thermostat, and heating element. The first thing to do is to test all three for continuity. You'll need an ohmmeter (preferred) or continuity tester to ensure there's a path for electricity through each of those components. If any of them fail, that part would need to be replaced. Here's a video showing how to test them.

Samsung Dryer Heating Element DC97-14486A - How To Test - YouTube

Here are a couple of videos showing you how to access and remove the heater for testing.

Samsung Dryer Not Heating Troubleshooting Made EASY - YouTube

Dryer Not Heating Samsung Common Cause & Repair. Appliance Repair Port St. Lucie, Fl - YouTube

Note that both of these videos show you removing the drum to access the heater, but if you're okay with lying on the floor, it is actually possible to either test those parts without removing the heater at all, or take the heater out without taking out the entire drum. There's only one screw holding the heater in, so if you remove that and unplug it, in most cases you can pull the heater out with the drum still in place. This video shows you how to do that.

Dryer Not Heating Up - Fixed - Samsung Dryer Element Replacement - YouTube

Every time I've run into a dryer that won't heat, it's been one of those three items, so those are definitely the place to start. If you check them and they do all have continuity and the heating element isn't shorted to the case, then come on back and let us know everything you did and we'll see if we can come up with the next steps for you to try.