MooSting : This is futures not ETF or Stock. You trade using short term time frame for day trade. Objective is to profit from a short trend in minutes chart. You need to have enough money to hold 1 contract for overnight trade . Do not trade if do not understand  futures.

MooSting 103176462 : The emini NQ is a leverage product . 1 point move is equal to $20. If the index move 20 point then you either gain or lose $400.  You need to have $21780 margin to hold 1 lot overnight . If your margin fall by $2000 you have to top up maintain your holding overnight or risk force closing.
Normally the emini NQ is for day trading. To try out you can trade the micro MNQ first. 1 point move of micro is just $2.

MooSting 103176462 : It is the same index only the leverage is lower. You just need $2178 to trade 1 lot if you hold overnight. Take note the expiry date of the contract.

MooSting : On the daily chart it is still in a sell side. But it is coming to the 50 ma soon. There may be support there.

MooSting 100k OP : The 50 sma is about 186. Look at how price react at this level