This would be selling puts.
When you buy a put, you are given the right, but not the obligation, to sell a stock at a specific price. So when you sell the put, you are potentially forced to buy the stock at that specific price from the put seller if they exercise it.
So yes, a lot of people use these options to set specific prices they'd want to buy a stock for and then collect the premium and if they buy it, they're not that unhappy.
Many people will sell cash secured puts as they involve less risk. For example, if you sold a put on Uber at $60 strike price, you'd set aside $6000 as that is what it would take you to buy the stock if the option holder exercises it.
The thing with selling puts/calls is a lot of people who do it simply speak on the benefits, that being the premium and potentially holding a stock you wouldn't mind buying anyways. However, what many people don't speak about (in terms of influencers, it's primarily because they offer some sort of course or strategy discord and are trying to get you in it) is the fact that there IS risk in these options.
If you sell a put on Uber at $60, if the option holder exercises it you will have to buy 100 shares of Uber at $60. Yes, you collect the premium, but what happens if Uber goes to $50? You will be forced to pay $6000 for 100 shares of Uber and the market value of 100 shares of Uber is only $5000. Lets say you collect a $200 premium for selling the put (I'm just throwing random numbers out) Your total cost for the 100 shares would be $6000 - $200 = $5800 for a stock that is worth $5000, working out to be a loss of $800.
To counteract this risk a lot of investors will think "oh well, I like owning the stock at $60 anyways" so they disregard the $800~ extra they paid. But, if they liked it at $60, they'd REALLY like it at $50.
Something to consider. A lot of influencers/investors market covered calls/cash secured puts as some risk free way to generate money. It's not.
In terms of Wealthsimple, you cannot sell puts at this point in time. But I'd imagine it will eventually be introduced.