I think maybe the issue here is that you have just relied on an injection every 2 weeks to get an election , whereas a penis needs almost daily erections and blood flow to remain healthy , elastic and straight. That’s why many men including myself are on a daily low dose tadalafil which helps with erections and keeps a healthy flow down there. And also you should have been using the pump at least every other day to engorge your penis and keep it elastic.
It’s likely you’ve developed scar tissue by not varying where you inject enough. This now causes a bend when erect. Most men who have surgery lose up to 2 inches in length over time however hard they try to keep him healthy. I think the pump will help sort the problem over time but will need to be used religiously daily. Once the problem is gone you may be able to use injections again but in different areas. Good luck