Hey man, just dropping in to say hi! Stronglifts is a great program for building up base strength in the main exercises.
If there's one thing I'll say it's make sure you stretch properly. I probably could've avoided months of frustration and missing squats if I stretched out my groin properly. Dynamic stretches are great as well for improving flexibility and to use as warmups.
Next workout try doing pushups before reverse crunches so that your abs are solid.
One thing I found helped with chin/pullup strength was doing 10 negatives after my 3xF. Jump up above the bar and lower yourself as slowly as possible.
Your bodyweight numbers look normal for someone starting out, don't worry about it. It's not uncommon to not be able to do a single chin, and to be not hitting chest to bar in inverted rows for many reps, and having low numbers in pushups. Also don't be discouraged with the upper body lifts becoming hard quick. Most people I know start to struggle round about 30-35kg on press, and 40-50kg on bench. You get 3 attempts at a weight (and always attempt all 5 sets no matter how early you fail) before you do a 10% deload. It's normal, don't get frustrated by "weak points" early on. You do the best you can every workout and never worry about numbers or what you think you "should" be making.
Look forward to reading about you getting strong