The republicans are great at obstructing the country and making sure no progress is made, and then when they are in power they are just horrible so terrible at their jobs they can't get anything done.
Yes politicians can often be terrible at their job (especially republicans) because unlike every other job where you have to actually be qualified to work that job as a politician you just need to get people to vote for you. And the republicans in particular are these days of a mindset of anti-intellectualism means they vote for stupid people. Trump is the perfect and ultimate example, a guy who would have never even gotten an interview for the job if there were a normal hiring process for president, lied a bunch and played on conservatives' fears and anger and hatred and bigotry and ignorance to get elected. Now he's the worst in history by a long shot and again, if this were a normal job, he would have been fired in the first month. Instead we are stuck with him for either four years or if we get lucky and republicans grow some balls or some decency (not likely) to actually defend the country against him and remove him from office.
It's amazing in 7 years of crying and whining about Obamacare that the republicans never spent anytime actually trying to come up with another plan. They voted constantly in symbolic votes to repeal obamacare, and then when they suddenly surprisingly find themselves with the white house they start trying to come up with a plan and their every attempt is an absolute disaster.
And of course they are gonna increase the deficits with an infrastructure bill while also having tax cuts, if there is one thing republicans cry about when they aren't in power but don't give a damn about when they are in power it is deficits. They are for worse at spending money than democrats because while democrats want to raise spending they also want to pay for at least some of it, republicans do the opposite - they want to raise spending, usually on the military pointlessly, but then have tax cuts at the same time to make sure the deficit problem always gets worse under them. Their god reagan promoted trickle-down economics and republicans are too stupid to realize even decades later it doesn't actually work, but in terms of marketing its the only way they've found they can even remotely try to sell harmful tax cuts to at the very least trick their supporters, which is pretty easy since their supporters mostly just blindly follow what they do.
The one piece of legislation they want to do that I would be excited for is tax reform, though only because they claim they would simplify the tax system a lot, no doubt that their tax rates would be a disaster for the government and afterwards democrats would have to come in and up the rates but the tax system does need an overhaul to a much simpler system.