Something I forgot to add:
The 20 W SMA is just the Bollinger Band Midline on the Weekly Chart. if you want to see this on Daily without having to wait for each weekly close, use 140 SMA (20 x 7 days)and set it to the 1D timeframe
For a better sense of what I mean, Add Bollinger Bands and check these dates on the USDT.D Weekly Chart.
Oct 16th 2023
May 8th, 2023
Aug 15th, 2022
April 4th, 2022
Nov 29th, 2021
It's a good indicator for HTF trend/Inflection Points even if you occasionally get some choppy signals (May 26th - Aug 7th 2023)
Hope this helps :)