Is there a way to soundproof a room from external noise? My neighbour's kid makes a lot of noise and it is giving me headaches and ruining my zoom meetings 😭

Only if the sound is coming from the windows or the doors. If it is through the walls, then you can't. krisp.ai + good noise cancellation headphones works well in these scenarios. https://ref.krisp.ai/u/ub695d43d7 <- I have a referral which should give you a month of pro if you haven't had a chance to try it as yet. I have my own kids screaming through the day and I often ask my co-workers if they can hear them and they can't. So this works quite well.

Yes, I gave krisp a try. For whatever reason it doesn't seem to be working well with my bluetooth earphones on Windows 10. I also need guidance with soundproofing the windows. Has anyone tried it in their workspace?

Related - acoustic foam from MMT Acoustix