condition = bool() #Can be anything like x > 0, bool(1), not x, x and y, etc.

if condition:
   #runs when the condition is true
   pass

else:
   #runs when the condition is false
   pass

To elaborate, let's try an example.

x = 2

if x > 1:
    print("x is greater than 1!")
else:
    print("x i s not greater than 1 D:")

That's not all you can do though.
Here's all the comparisons that you can do in example form:

x = 0

if x == 0:
   print("x equals 0")
else:
   print("x does not equal 0")

x = 0

if x >= 0:
   print("x is greater than or equal to 0")
else:
   print("x is less than 0")

x = 0

if x <= 0:
   print("x is less than or equal to 0")
else:
   print("x is greater than 0")

x = 0

if x != 0:
   print("x is not equal to 0")
else:
   print("x equals 0")

Those are at least all that I know, someone let me know if I missed any.

You also have modifiers you can put before and inbetween conditions, those are
and, not, and or

To show how to use these and what they do, here's an example:

x = 1
y = 2

if x == 1 and x != y:
    print("x is equal to 1 and not equal to y")
else:
    print("either x is equal to 1 or x does equal y")

x = 1
y = 2

if x == 1 or x != y:
    print("either x is equal to 1, or x is not equal to y")
else:
    print("x is not equal to 1 and x is equal to y")

x = 1
y = 2

if not x > y:
    print("x is not greater than y")
else:
    print("x is greater than y")

We also have one more thing we can do with if-else. We also have if-elif-else in python as well.

Python sees if the if statement is true, and if it is, executes it. Otherwise, it executes the elif statement, then if that's not true, it executes the else statement.

To make some more sense out of it,

if 0 == 1:
    pass
else:
    if 0 == 2:
        pass
    else:
        pass

Is the same as;

if 0==1:
    pass
elif 0==2:
    pass
else:
    pass

You can also have mutliple elifs following an if.

I hope this made some sense and helped you out!

Just to make it more simple:

if cool == true:
   print("I am cool")
else:
   print(" :( ")

Also it dont matter if you use "These" for a string or 'These' Its the same

Like this:

if something:
  # this will execute if "something" is true
  print("something is true")
elif somethingelse:
  # this will execute if "something" is false, but "somethingelse" is true
  print("somethingelse is true")
else:
  # this will execute if neither "something" nor "somethingelse" is true
  print("nothing is true")

You can add as many elif statements as you want.

Please mark this as the answer if it solved your problem :)