1, Never listen to YouTubers they are bums .
2. BTC is the king. The ratio should be like BTC/ETH 80% rest alts.
3. Make a decision - When big opportunities knock the door make decisions fast. trust your gut. Examples are Elon musk shill dogecoin first time. Facebook change the name to Meta. You have to make a decision when is happening the same day.
Like when you have the opportunity to go out with a girl you like. Make a decision now. All these waiting and thinking is killing you. Think fast.
To your fist point: I totally agree and of course this is not only true for youtubers but for every crypto influencer out there may it be on twitter, facebook or whatever platform they are on. All they do is to shill their own bags and none of them really cars about their followers. They just shill a project that they are already own themself, so their followers are buying it and then they dump on them. Maybe there are a few good influencers out there, but i have not seen one yet.
To your second point: If you wanna go for a relatively safe investment then of course i agree but if you are going for potential moonshots like x10 or more in a realtively short time then you have to invest into small alts. The risk their of a total loss of your investment is way higher this way obviously but you should not invest money that you need for living anyway.