No, Christians do not pick and choose the rules they follow from the Bible

Under the new covenant, Christians no longer practice the holiness code and the commandments contained in ordinances. The apostle Paul explains that these were specific to Israel in the old covenant to keep them separate from the pagan nations. Christians are no longer under these laws because they have the spirit of God within them and have been brought into one body. However, the holiness code and commandments still have meaning and relevance. Christians are still instructed not to practice what unbelievers do and not to adopt syncretism. While the practices may not be followed in the same way, the principles behind them still endure. For example, although Christians no longer remove leaven from their houses, they are still instructed to remove the leaven of malice from within them. Moral principles, such as laws about justice and sexual morality, are applicable to everyone as they are universal principles for all image bearers.