Take this from someone who wasted a LOT of time. I played bot games from level's 1-30 and have a whopping 27 wins (meaning as much as 60 games total across Normal PvP). You are level 21 and have 31 wins; imagine how many wins you would have by level 30 if you only played PvP from this moment onward.
My point is to just ease your way into PvP and have fun. From what little experience I gathered back when I PvPed in the early level's (10-15)... it's so much more lax than when you hit level 30 and get pitted versus people with years of experience (800 games, like c'mon). I even had the occasional duo top lane back then even though smite was unlocked at a much lower level. Basically, just mute the flamers, ignore the intentional feeders, mentally prepare yourself to deal with the AFKers, and understand that you will lose lane a lot at first but you'll get better over time. And if you don't get better over time... well you'll be put against people at your skill level and eventually be able to maintain a 50/50 win ratio - which if raised would mean you're becoming better as a player over time.
When I went past the point of no return (level 25+) I started getting stomped whenever I tried transitioning from Coop vs AI to PvP (especially due to no runes since I spent all my earned IP on champs) - don't let the same happen to you. Some people told me to just PvP it up until I molded myself into the matchmaking system but it never seemed to work out, so I took to my own method and started over from scratch. I have a level 15 now and I'm having tons of more fun, win or lose, doing good or bad, then I would have if I had continued grieving myself over a high level account that only invested time into bot matches.
I haven't played in about a month and a half due to classes and playing other games, but I'll add you on my level 15 and we can play together win or lose, good or bad scores. ^^ My schedule only fits some mornings and all night on weekends though. I'm not the best, obviously, but I can try and help you if you want the help.
EDIT: Muting the flamers is unfortunately the best it's going to get. Luckily, you yourself aren't a flamer so that leaves 4 people on your team and chances are either one is a flamer or none are. Mute the flamer(s), get along with your team, then try to win the game. If you get a team of 4 flamers, then tough luck - it happens. :/ But I'm sure you'll get more games of non-flamers than flamers in the long run and that's all we could really ask for. I personally never mute anyone but to each their own... some people just can't handle it as well as others.
