Graphics Glitch

Recently, I got a code to redeem Minecraft for the PC as a Christmas present. I've played the game before and I have never seen this glitch. I type in the code in the Microsoft Store and the game downloads. The one thing I had never done was access a sever, so that was the first thing I did. I saw the glitch for the first time. I thought it was just a bug in the server, so I left and made my first world. There is was again. This glitch is extremely annoying and frustrating, taking away from the whole game experience. I almost regret asking for this now. What the heck is going on? Fix this.