Utility sink clogging

[Ronald Roseen]

Stuck with clogging problems for my basement sink. I don't know, but lately the clogging is happening pretty frequently and I have to unclog using whatever stuff I get in my hand and goes through the pipe. But something is telling me that the whole sink drain is having some issue. I don't know much about the stuff and thinking of trying few DIYs with the help of experienced once here. If nothing changes, I will have to get some plumbing repair services like Doctor Rooter, Toronto, down to the basement.
If it is about the pipe, what can I do? I don't understand the way the pipe is fixed to the wall, I mean the whole setup is confusing. Any thoughts on it. Should I go check the outlet of the drain?