Hello Sintha

@font-face {
  font-family: "HelloSintha";
  src: url("./HelloSintha.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "HelloSinthaItalic";
  src: url("./HelloSinthaItalic.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

Self-host the font files from your download. Commercial license → licensing.