Huge LAGS

I have S23 regular phone for 6 months and these days it's becoming so laggy and very annoying. My phone looks like a cheap phone with it's very bad performance. Whatsapp lagging switching between pages and windows. Typing on keyboard is driving me crazy because of it's lags. Why is that? It's my first time using a flagship phone and I wanted this phone to live with me for 3-4 years but it seems dying before finishing its first year. Btw my usage is light (Social Media) and some music or videos in background sometimes. 😕