My husband and I have had several cats over the past 44 years. Most were "my"cats as I did all the feeding, litter tray, and vet visits. Our previous cat was feral and took to my husband quite quickly - in fact, it was 2 years before he sat on my knee. The current cat has been here for 14 months. He had been a stray. Whenever my husband moved, the cat used to dash to the door to escape. He now occasionally sits next to my husband. Slowly, but surely, your cat will trust you.
I wouldn't get another cat - your present cat may not like that, then you'd end up with 2 unhappy ones. Cats generally prefer to be.