https://t.me/rybar and https://t.me/grey_zone are great. No lies or hiding ugly truths. They are both Russian language, but telegram has an auto translate option if you need. Many of the english ones have to much ‘copium vibe’ imo. Intel slava is good for pics/vids with eng subs.

English subs on interviews with POWs: https://t.me/grigoriev_maxim

Edit: almost forgot https://t.me/strelkovii (rus)