Introverted dads, how do you tell your kids to give you space without making them feel unloved?

Basically the title…

My 5 year old son is so extra clingy. I love him but he’s smothering me with his clinginess. I allocate a lot of time to spend with him everyday. But being an introvert, I also need my alone time, and he does not understand that. In his mind, if I’m awake, why not just play with him? I’d kindly ask him to go play by himself and he just pretends to not hear me. Then I have to raise my voice to tell him to get out of my room because I physically feel like I cannot breathe.

I need advice and support 😔