Trump surrendered to Nancy Pelosi and the Democrats and reopened the government with no funding for the wall. His base feels betrayed with Ann Coulter calling Trump the "biggest wimp ever to serve as President of the United States." With IRS staff not showing up for work, Trump was about to get the entire country far more irate as tax refunds would be arriving late if the shutdown continued. Additionally McConnell told Trump that he couldn't hold the Republicans together on the shutdown any longer. Republican Wisconsin Senator Ron Johnson blamed Mitch McConnell for letting the government shutdown go on for so long while a poll in Wisconsin showed that 49% of Wisconsinites absolutely will not vote for Trump in 2020 to 27% who would. Trump's approval was falling despite his bully pulpit and fruitless prime time address. All the suffering and financial costs that Trump caused with the shutdown was in vain - Trump's inexperience and incompetence at its finest.
In addition to all that, now Trump's campaign chair Paul Manafort has been convicted, Trump's deputy campaign chair Rick Gates has pleaded guilty, Trump's national security advisor has pleaded guilty, his personal lawyer of 12 years Michael Cohen has pleaded guilty, and Trump's most loyal advisor Roger Stone has been charged with crimes. Mueller is closing in.
I think your wording is a bit off. Trump did not surrender to Nancy Pelosi. He granted a 3 week reprieve so the federal workers can be paid and to try to get everyone back to the table to negotiate a deal. He said if a deal is not reached in 3 weeks that he would either shut down the government again or declare an emergency and go around congress for the wall. I am glad the workers can get paid but this is not over by any means. I like a few things he has done such as making all those kids apply for asylum in their own country and not in the US and making the asylum seekers wait in Mexico while their cases are processed. Maybe Trump will start stepping up deportations if he gets no additional walls. We already have 650 miles of walls and barriers. Trump can still create hardship for immigrants even without a wall. His speech today was outstanding and he did a great job explaining why many illegal immigrants are nothing but criminals.