Obviously. Churches are always welcoming. Just don't take the communion when there. If you still want to head up for communion, fold your arms in front of your torso and the priest will give a blessing.
The only trick with Catholic churches is that socializing is a bit tougher than at Protestant places. Try to follow where people tend to hang out after the mass. Often, this is actually the parking lot. There will also be some non-sacred spaces inside the church somewhere that people might hang between masses. The Church bookstore or dining area, usually. But, parking lot is usually the Catholic thing. After that, pick up there bulletin for events.
I don't have experience with SSPX, so, I can't say for sure how many "based and redpilled" Catholics would head there. My guess is that there would still be plenty there. The SSPX formed as part of internal church politics that you likely don't care about as a non-Catholic.
Dude, there's a reason why there's a huge growth of Catholicism, now (a 300% jump in my city alone). Protestantism does not stand up to historical scrutiny nor common sense and people are having access to all this information. The Early Church is an open book. We know everything about those dudes and it's a straight line from them to the Catholic Church of today. We know who the Disciples' disciples were and they wrote books and ran churches.
Probably the most common way Protestants convert to Catholicism (other than laser eye memes on imageboards) is by going, "I want to worship like the first Christians did!" And then go see what they did and believed: "Oh...they sprinkled holy water at the start of the service....oh, they think the bread is Jesus....what did he just say about Mary...?"
When you take this redpill, you're going to feel stupid and brainwashed. I'm serious. So, be patient. Read articles on Catholic.com. Go check out apologetic videos. I felt like I had to go on an apology tour for Catholics for all the insults I used to give them and saying they'll go to hell.
Also, here's this starter. Keep in mind, the Book of Acts was written in like 90AD. So, these guys are within living memory of the apostles.
Read Michael Hudson. Periodic, universal debt forgiveness existed for millennia in the Western and Near Eastern worlds. Most notably, you see this in the Bible, and even Jesus speaks of it. People used to understand that allowing people to be in debt created a slave class. So, new rulers would always start their reign with universal debt forgiveness (this is where we get the phrase "wiping the slate clean").
This is why the "college loan crisis" is called a crisis. You have millions of Americans starting their lives and ending their lives in hopeless debt. This includes the professional class.
Are we sure we don't have that already?