Every coin that I close the position at 60 Doller or 100 Doller lose it return back next day or the same day

Hi guys
I'm going recharge more 1000 usdt after losing 1100 in few days. I need your suggestion what are lowest value coins I must buy and hold and for how many hours or days? Because I'm the person like swing profit? E. g capturing few points Because I feel panic when the lose is too high because I like small profit 20 30 Doller not big because values goes down and it waste my alot of time keep watching the screen and candles all the days.
Please name those coins?
Is it only the option I can buy in spot ? Because now I just moved to spot trading not future?

I'm changing my usdt from future to spot

2nd question? What is the difference between spot and future trading if I don't use levreag I mean with 1x onlyin future ? Is there any other difference if than let me know?
Your suggestion is important for me thanks