the variations are what help you win more often, for example, like 100 coins worth 1.00 USDT if that coin rises by 0.10 you earned 10.00 USDT

Guys, here are some questions. I hope you can help me understand better:

Is it worth buying and selling daily with small price fluctuations?

Is it possible to trade with amounts smaller than $5? For example, if I want to buy just one dollar of a crypto, will I always be forced to do so with 5$ ? Is this possible outside of the brokerage?

If I do DCA on a newly launched coin, will this prevent me from losing money by buying at the launch?

Is it possible to avoid losses with launches, or is it just luck?

I tried to participate at the time of the listing of two launches and in both the price quickly plummeted.

In both launches, I followed the hype before the listing and ended up losing a little because of it.

What is the right thing to do with launches?

And last but not least:

What is your opinion on the Bitcoin dog? (dog go to the moon)