If you don't want oaths of principle and practice to be an integral and core part of your character, then you do not want to play a paladin.
If you want to follow a deity directly, without an oath of practice and principle backing that up, then what you want is a cleric.
Consider this:
Deities in the realms are fickle and changeable in many ways. Both Clerics and Paladins can swear themselves to the service of a deity, and to a set of principles which that deity embodies, but they diverge in an interesting way... Sometimes a deity's nature can change or be changed; they can acquire new folios or lose one that they previously controlled, or they can be affected by cosmic events and inter-deity conflicts or unions that substantially alter their essence and behaviour. Clerics often face being influenced by their deity through their divine connection, and we have many, many tales about gods who changed and in turn caused a change in their clerics as a result - those clerics who once acted in particular way are influenced to adopt the changes in behaviour and ideology of their deity, and are also so changed. Paladins rarely experience this - but rather, paladins tend to find instead that they can no longer follow the deity they originally served when that deity's demeanour and behaviour changes in a way that defies the principles to which the Paladin swore in that's deity's service originally. Those that remain in service to the changed deity, despite its defiance of their original principles, are almost always characterised as Oathbreakers, while those who renounce the changed deity and seek a new divine intermediary to support them - perhaps in their quest to help or redeem the corrupted divine they once served - are not.
So, the question to ask yourself is, if you are playing a character sworn to a deity, and that deity changes their nature, do you continue to follow them, or do you continue to follow the principles for which they originally stood, but now no longer do; if your answer is the first, then you're most likely a cleric, while if your answer is the second, you're most likely a paladin.