I can’t recommend the quieton 3 active noise cancelling earbuds highly enough. They are the only earbuds that keep out most of the noise and even loud noises to a manageable level. They are relatively expensive but well worth it. I have tried nearly everything but now use these most of the day and while I sleep. In my opinion it eradicates about 90% of daily noise. Takes a little bit of time to get used to them but if you are used to standard foam earplugs then it shouldn’t be much of a transition. If you want nearly 100% noise cancellation you can put ProCase ear defenders on top which are only around £15. Reduces the comfort level by a good margin but if you need near silence to concentrate or stop brain fog due to anxiety then this is the only solution that works for me.