Am I liable for one expiation or an expiation for each oath, knowing that I swore more than 200 times not to return to a sin that I went back to?

Scholarly opinions vary regarding the issue of multiple expiations for repeated oaths concerning a single matter without expiation:

The Majority: They hold that multiple expiations are obligatory, corresponding to the number of oaths. The Hanbalis: They maintain that only one expiation is obligatory for all those oaths. This is their adopted view, and it is permissible to follow this opinion due to potential hardship.

The expiation for an oath is feeding ten needy persons, or clothing them, or freeing a slave. If one is unable to do so, then fasting for three days, based on the Almighty's saying: "Allah will not impose blame upon you for what is unintentional in your oaths, but He will impose blame upon you for what you intended in your oaths. So its expiation is the feeding of ten needy persons from the average of that which you feed your [own] families or clothing them or the freeing of a slave. But whoever finds not [the means] - then a fast of three days. That is the expiation for your oaths when you have sworn. And guard your oaths. Thus does Allah make clear to you His verses that you may be grateful." (Al-Ma'idah: 89).