Just joined this forum in hope of getting some advice/ideas.
We adopted our cat, Ori, a year ago and absolutely love him. He is a 5-year-old outdoor cat that loves to go outside and hunt.
Recently he stopped going out as often which is strange as both me and my partner have 9-5 jobs so he would usually go out for at least an hour after we're back home. I'm thinking he might not like the colder weather maybe?

Anyways, since he doesn't go out for long anymore and we are only back in the evening his needs for attention and playtime increased dramatically. I play with him as often as I can but after I stop he sits next to us and meows for more attention/play.
After we saw a poster at our vet's of someone looking for a new home for their cat - we started considering adopting another cat. We realise the introduction process might be lengthy and require us to work on it quite intensely but it is something we are willing to do if in the end of it Ori might be a bit happier and get a bit more stimulation at home, also we would free another spot at some shelter so there's that

In June we moved into an area with a lot of local cats and from what I've observed Ori managed to break ice ok with some cats and enjoys jumping around and chasing each other. I even saw him playfully roll around when a neighbour's cat looked into our living room. He's fine with other cats except one bully cat that always wants to attack Ori.
Obviously I know it's important to take the introduction process slowly to achieve such results but maybe it's possible?
So my question really is, what is your opinion? In research of this topic I've found many contradicting information. Some say, some cats will never accept another into their household, some say that cats can adjust as long as the introductory process is followed correctly and corresponding to the cats' reactions.
So would it be a good idea to try? If so how do you usually would approach it? I can see cats needing home however most of them are kittens or cats that do not tolerate other cats. Would I just call a shelter and explain what I'm looking for?
Thanks a lot and sorry for the essay!
Stop this nonsense, hooman!