I would highly avoid using any crypto signals found on Telegram groups.

Remember that these kinds of schemes are created primarily for profit. Though they may create/make claims and promises of receiving returns in a "xxx" amount of time, it is most likely a scam that will attract newbies to invest on their project. I personally witnessed these kinds of schemes and almost every group has the same format, feature, and scheme introduced.

Remember that this is the beauty of cryptocurrencies- you are the one responsible for creating your own kind of signals and skills in order to prevent imminent loss from your resources.