Is it possible to trade these commodities on the stock market?
No. Commodities are traded in a commodities market. Stock markets are for stocks. Please do a lot of research prior to executing trades it is akin to options investing. However you can trade companies that benefit from increasing prices in oil and gas. For example Exxon or for a more diversified selection the Vanguard Energy ETF.
Is it possible to do that?
Yes of course. Here is one example. Keep in mind that you will be trading contracts with a unit size of 1,000 barrels and that they are contracts with expiration dates.
I don't care about dividends.
It doesn't matter. As long as I can buy it today and sell it at a date of my choosing, I'm fine.
These comments suggest you do not really understand the risks. You may want to educate yourself quite a bit.
The current bear market is nothing new. Its happened before and will again. Every day the markets provide opportunity, some are better for buying others for selling. It is impossible to reliably time the market unless your horizon is long term.
Having said that I agree with you. To me this bear market has no merit, and will turn around very quickly. However some really smart and savvy people disagree with me. They feel that this bear market will last for a couple of years.
My strategy was to pick up some stocks at a bargain and invest heavily in index funds. I did it with some of my savings, and money I had earmarked for business opportunities. Also I directed 100% of my 401K contributions to stocks. Of course I maintained a healthy emergency fund.
So if I am wrong, it doesn't matter. I will get dividends (even if they are lowered in a long term bear market), and eventually the prices will rebound. Much like investors were rewarded after the crash in 2009, I expect to be rewarded in the future.
With futures contracts, you have to guess not only the price that the future contract will be, but also the date it will get there. You have to decide if the premium you pay is worth the expected change in price. You are probably correct that the price of oil will rise in the future, but when? by how much?
With stocks, you may think a stock will rise by 20% in 12 months, but if only rises 5% in 24 months you still made a profit. Depending on the contracts, the same situation, using commodities or options, could result in devastating losses.