how it works is there any trade discussion and Signals about Bitcoin? And what is Custodial dex and how do I buy Bitcoin in my local currency?
You need to focus on learning bitcoin first. Its not just about trading and signals that makes you gain profits. If thats what you are looking for then you are in a wrong place. Theres a link and discussion thread shared already here might as well visit that and you could always visit the bitcoin discussion thread for more info about it. Regarding buying on your own currency, you need to find a market that supports your fiat money or yet do a p2p(peer to peer) service there in your place to convert your fiat to bitcoin.