Okay, it's a bit hard to sort through your text, but I think these are the key points.
1) You want a companion for your male betta, who is in a 1 gallon tank.
2) You want a larger tank, possibly a 2 or 3 gallon.
3) You want to start a sorority.
My responses would be as follows:
1) Your male betta can't have a companion in a 1 gallon tank. No one is calling you a fish murderer (which I see you addressing in every post you make), and IMO a 1 gallon tank is fine as long as you keep up with water changes (2x per week... one 50% and one 100%), but it is too small for anything other than one betta alone. If you wanted snails or shrimp, you'd need to get a larger tank.
2) Awesome, I totally encourage you to get a larger tank! My personal minimum for a permanent living space is 2.5 gallons. I have two fish in 2.5 gallon tanks and one fish in a 3 gallon tank right now and they are happy as can be. If your mother will let you get a larger tank, definitely go for it! Petsmart sells a 2.5 gallon glass aquarium with a glass canopy for something like $15.
3) A sorority needs to be a minimum of 10 gallons and 4 girls. Anything smaller than that simply isn't fair to the fish and will end in ripped fins, stressed fish, and possibly death. My advice would be to focus on your male for the time being.
You have a very handsome boy there! But it looks like your tank doesn't have a heater or a thermometer to monitor the temperature. Your boy also looks a little clamped, possibly from stress. Bettas are tropical, so their tanks should be kept in the 76-82 degree range, and their temperature should be kept as constant as possible. I'd recommend getting a heater for your little guy before you worry about tankmates.
Also, male bettas aren't really social fish. I promise, he's not lonely. He likes being the king of his castle!