There are gods. In general, they don’t do very much, and most of them only do one particular thing. The process of who gets to do what is rather intricate and heavy on the backstory, but it usually ends up with someone being the god of this, someone else being the god of that, and so on until you end up with the god of all other miscellaneous things that are not the domain of the other gods.
It is strongly discouraged to question why this is. For one, the aforementioned backstory will be related to you, in detail. Second, the celestial bureaucracy has had more time to sort out the finer details than you can imagine. If you have things to do and places to be, just accept the things related as given and move along.
It is assumed that the elder gods are more powerful than their newer counterparts. Knowledge is power, and knowledge is gathered by being around and doing things, which is the general activity of gods, regardless of age. Thus, having been around longer equals roughly to being more powerful, on general principle.
You already know this, of course. Hearing that the gods are angry is enough to make you quake in your boots with fear right and proper. Hearing that the Elder Gods are angry is enough to make you forget that quaking is an option, fearing that they will find out where you are by listening for your boot noises.
Hearing that the Elder Gods are angry at you in particular is bad news bears all around. Especially the Elder Gods of Bears.
However, there is a limit the power of elder gods. It is not that they themselves age and lose potency over the years – as you have seen, it’s quite the reverse. The gods are, however, made in the image of those who created them. And if we go far enough back into our ancestral history, we find gods created by ancestors who had almost, but not quite, developed a sense object permanence.
Knowledge is power, which means that your best bet is avoiding the really really old gods. If they can’t see you, they don’t know you’re there, which means they can’t be angry at you.
Even if they are old bear gods.