if ( (channel = searchCannel(channelName)) || counter == 5 ) {

 if ( (channel = searchCannel(channelName)) || counter == 5 ) {

((channelName) => {
   function searchChannel(channelName) {
      const coll = document.querySelectorAll('div#channel-info');
      let elem = '';
      for (let item of coll) {
         if ( item.innerText == channelName && (elem = item) )
            break;
      }
      return elem;
   }
   let channel = '', allElemsCount = 0, counter = 0;
   let timerId = setInterval(() => {
      if ( (channel = searchChannel(channelName)) || counter == 5 ) {
         clearInterval(timerId);
         if (channel)
            channel.parentNode.parentNode.querySelector('a#thumbnail').click();
         else
            alert('Not found!');
      }
      else {
         let newAllElemsCount = document.querySelectorAll('a#thumbnail').length;
         if (!(newAllElemsCount > allElemsCount))
            counter++;
         else {
            allElemsCount = newAllElemsCount;
            window.scrollTo(0, document.querySelector('ytd-app').scrollHeight);
         }
      }
   }, 2000);
})('ИМЯ КАНАЛА');

if ( item.innerText == 'Skibyxa' && (elem = item) )

if ( (item.innerText == 'Skibyxa') && (elem == item) )

   setTimeout(function () {
      window.scrollBy(0,5500);
   }, 1000);   

 elem.parentNode.parentNode.querySelector('a#thumbnail').click();

(() => {
   const coll = document.querySelectorAll('div#channel-info');
   let elem;
   for (let item of coll) {
      if ( item.innerText == 'Skibyxa' && (elem = item) )
         break;
   };
   if (elem)
      elem.parentNode.parentNode.querySelector('a#thumbnail').click();
   else
      while (true) {
      window.scrollBy(0,5500);
      };
})();

(() => {
   const coll = document.querySelectorAll('div#channel-info');
   let elem;
   for (let item of coll) {
      if ( item.innerText == 'НАЗВАНИЕ КАНАЛА' && (elem = item) )
         break;
   };
   if (elem)
      elem.parentNode.parentNode.querySelector('a#thumbnail').click();
   else
   setTimeout(function () {
      window.scrollBy(0,5500);
   }, 1000);   
})();