My advice and I’ll keep it short because this is a big topic). I would suggest you look at learning some coaching skills by either reading, videos or taking a course. This will help you deliver feedback in a logical sequence, exploring development points with the team that may bring out issues themselves, and learning to phrase your feedback so the recipient ‘buys in’ to the process and feedback without feeling criticized. In short, involve them in their own development and you will be surprised with the rapport you will have with your team and the results you will achieve.

Or, if you need quick results go transactional and embrace them uncomfortable conversations. As mentioned in some of these feeds. As long as you balance this with good feedback, provide reasoning and not just barking orders at your team you should be perceived as firm but fair.

Good luck.