[obstacle1]

You negotiate when you have leverage. Leverage is an implied threat that you will leave the company where the cost to the company of you leaving will be significant. You have to be ready to actually leave the company in order for this to work. Generally this involves having a competing offer in hand.

Since you do not have an actual offer and you are not going to leave the company, you should not try any tactics in negotiating a raise. Your best play is to make a case based on the value of your work and ask politely and hope for the best. This will not get you a big raise, but it may get you a modest one.

This is not the optimal position for you in terms of career development, but it is the position you are putting yourself in by wanting to stay in your current job regardless of potential opportunities externally.