How to avoid Overlapping of random numbers? and Rotate the Circle?

const circle = document.querySelector(".circle");
const addNumBtn = document.querySelector('#addNumBtn');
// we set the width of the circle element in JS and pass
// it to CSS using a css variable and the root element
const circleWidth = 650;
document.documentElement.style.setProperty('--circleWidth', `${circleWidth}px`);

// NOTE: '~~' -> is quicker form of writing Math.floor() 
// runs faster on most browsers.

function randomPos(min, max) {
  return ~~(Math.random() * (max - min + 1) + min)
}

// return a random value between 1 and 50
function randomValue(){
  return ~~(Math.random() * 50) + 1;
}

function randomColor() {
  let r = ~~(Math.random() * 255) + 1;
  let g = ~~(Math.random() * 255) + 1;
  let b = ~~(Math.random() * 255) + 1;
  return `rgba(${r},${g},${b})`
}

function randomSize() {
  let size = ~~(Math.random() * 30) + 8;
  return `${size}px`
}

// add a helper function to find the center of the 
// circle and calculate distance to the edge of circle
// x and y are the randomly generated points
// cx, cy are center of circle x and y repsectively
// rad is circle radius
function pointInCircle(x, y, cx, cy, rad) {
  const distancesquared = (x - cx) * (x - cx) + (y - cy) * (y - cy);
  return distancesquared <= rad * rad;
}

// you can remove valArray array if you do not want the 50 numbers to not be repeated
const valArray = [];

function randNum() {
  // add a counter
  let count = 1;
  // while loop to check if the counter has reached the target 50
  while (count <= 50) {
    // set the randomly generated val
    let val = randomValue();
    // random size = string with px added
    let randSize = randomSize();
    // random size = the exact number => typeof number 
    let posSize = randSize.split('px')[0];
    // an array to hold our randomly positioned number values
    // uses helper function randonPos
    // pass in the 1 and the circle width minus the font size
    let ran = [randomPos(1, circleWidth - posSize), randomPos(1, circleWidth - posSize)];
    // conditional to check bounds of circle using helper function
    // we pass in the ran array, center points and radius
    // we add buffers to accommodate for the font size
    // you can remove !valArray.includes(val) if you do not want the 50 numbers to not be repeated
    if (pointInCircle(ran[0], ran[1], circleWidth/2-posSize, circleWidth/2-posSize, circleWidth / 2 - posSize) && !valArray.includes(val)) {
      // you can remove valArray.push(val); if you do not want the 50 numbers to not be repeated
      valArray.push(val);
      // if the conditional returns true, 
      // create the element, style and append
      let randnum = document.createElement("p");
      randnum.classList.add('numStyle');
      randnum.style.color = randomColor();
      randnum.style.fontSize = randSize;
      randnum.textContent = val;
      randnum.style.position = 'absolute';
      randnum.style.top = `${ran[0]}px`;
      randnum.style.left = `${ran[1]}px`;
      circle.append(randnum);
      // iterate the counter
      count++;
    }
  }
}

addNumBtn.addEventListener('click', randNum)

html {
  --circle-width: 300px;
}

.circle {  
  aspect-ratio: 1;
  width: var(--circleWidth);
  background-color: black;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  padding: .5rem;
  -moz-animation: spinoffPulse 1s infinite linear;
-webkit-animation: spinoffPulse 1s infinite linear;
  
}

@-moz-keyframes spinoffPulse {
    0% { -moz-transform:rotate(0deg); }
    100% { -moz-transform:rotate(360deg);  }
}
@-webkit-keyframes spinoffPulse {
    0% { -webkit-transform:rotate(0deg); }
    100% { -webkit-transform:rotate(360deg); }
}


#addNumBtn {
  position: absolute;
  top: 0;
  left: 0;
}

.numStyle {
  font-family: "roboto", sans-serif;
}

<div id="container"></div>
<div class="circle">
</div>
<button id="addNumBtn">Click Me!</button>