You are an introvert and as you were withdrawn in your initial years of marriage, you were not doing that on purpose. It’s part of your nature. Your husband on the other hand seems to have huge following on the social media and seems to be stone walling you on purpose. My advice would be to forget whatever happened in the past & to not to pursue him but indirectly draw interest towards you with like just smile at him as you pass in front of him. Dress up nicely, put some cologne, body sprays. Make sure house is clean and there’s positive energy all around. Put some old romantic songs. Sleep tonight & get up in the morning with a totally different frame of mind & get on the pursuit of him coming to you, rather than you going to him & getting ignored.