Unfortunately it’s pretty hard to give suggestions without logs or you being on the main itself but I shall try :3
Like mentioned above depending on your raid set up and how many healers, their skill, dps skill in avoiding/performing mechanics, etc it will vary how a healer looks on logs. If the fight was successful without issues and no one died to non-avoidable damage I wouldn’t worry too much.
If you are too shy you can put you log into this site yourself https ://wowanalyzer. com/ and it will give you some general tips, ( such as: use renewing mist more often, make sure you use your instant vivifies and sheilun stacks, rsk more…etc )
Review your talents and make sure you are picking up the best ones for the situation/encounter. I run this for our raids and it has been working for me:
Mistweaver Monk Dragonflight Talent Calculator - 10.1.0 PTR (wowhead.com)
It’s pretty chill, gets the job done. Make sure you pop sheilun’s for a lesson/buff a global before you would normally press revival, you also want to have essence font bolts on as many people as possible, if you are extending HoT’s with RSK/RM talent you’ll probably have them up, but if you need to get them out asap then TFT-EssenceFont-Sheilun’s-Revival is a quick way to get the combo out and if you run the Secret Infusion talent youll get a haste buff from TFT-EF’ing.
Make sure you are spreading renewing mists, you want as many up as possible and to be extending them.
Once you get a Call of Dominance trinket our Celestial becomes dirty strong and with the talent Invoker’s Delight you can get a ton of haste every minute, which helps immensely with spreading the breath HoT out and getting more actions during the Celestial window.
Make sure you are extending your HoT’s if you run Rising Mists and RSK-ing to get more RenMists, TP/BoK in free time to fish for resets and regen mana.
Make good use of your mana tea windows, if you plan to spam you can usually pop mana tea, it an be macrod with Yu’Lon. Mana tea also procs our tier bonus due to it being a tea.
Make sure you have your 4 set, 2 set is HUGE in terms of mana regen so start there. Rashoks trinket is very nice too, combined with the 2 set mana issues are rare, make sure you try to get 1-2 mana pots in the fight. If fights last longer than 5 mins you can usually get 2, once your group gets better fights get faster, people take less damage and you only use 1. Early prog on some fights you can prob get 2 though.
Find that balance between pumping and regenning mana during down phases while trying to end the fight at 0% mana. Also try to reduce overhealing as much as possible and work with your other healers. This eventually comes with doing the fights more and once you learn damage patterns. A sufficient amt of base haste is also helpful for this. ( I usually maintain 30% and then do other stuff )
Re-read all the abilities/talents and keep in mind the nuanced synergies and combinations each has, mastery, essence font, tftea with and without Secret Infusion, lessons of shaohao, soo mist/CF. There are a lot of combos/synergy with our abilities.
If you have more specific encounter questions or class/spec issues it might help to be more specific. The problem could just be that you are running with too many healers and like mentioned above there is only so much to heal during a raid boss.