I know that it’s not their fault, it’s the small size of the team
This part is directly Telegram’s fault. If they cannot keep up with their moderation queue then they need a bigger moderation team. Preferably properly remunerated. There are news reports about how Facebook’s sub-contracted moderators work for these extremely shitty companies who track them based on how many reviews a minute they do, and which causes extreme psychological damage to the workers both because of the extreme content they have to see as part of their jobs and the bad working conditions they must put up with.
If you have a Mac the free app Tomito in the App Store is a genuinely good pomodoro timer. There are plenty other options, even websites, but this one is my favorite so far.