I suggest mining crypto with your computer, and only trading with what you mine. Also, open accounts on different exchanges, and buy where you find the best prices. BTC
What crypto would you suggest anyone to mine with computer? There is almost 0 coin which you can mine much in btc, it's so low that it doesn't worths to turn on pc for that for even one months if we don't mean monero.
And most exchangers closed registration so I guess it won't be so easy task as for now.
Study and practice with virtual money is best, it will help you to build a little confidence.