Most everyone starts at low weight. Everyone has been saying don’t worry about it, focus, and they’re right. But that’s hard - I remember when I first started.
I had only a couple 10 lbs. plates on the bar - it’s hard not to think someone else is snickering under their breath. What I did was bench with dumbells to start. In my mind at least, it didn’t look as bad as the bar. Plus, I think using dumbbells for bench is better anyway.
Another thing to look forward to: you’re just getting started and you’ll likely see your numbers go up every week. You’ll be able to improve pretty rapidly at first in just about all your lifts. When I started I put 50 lbs. on to my bench in under 4 months.
Lastly, there is one thing that is embarrassing: using more weight than you can handle. You’ll come on here, read about “going heavy” and sets of only 3 reps and that this is optimal for building strength. So you’ll load up the bar and try it and have terrible form, not make any progress, and probably end up hurting yourself. I did this too, maybe you’re not as dumb as me.
Someone can correct me, but I’d stick to weight at 8-12 reps, 2-4 sets for at least the first few months. Remember, you only need to change your program if you stop seeing gains, and low-rep, high intensity programs aren’t really suited for beginners. Just make sure that those last couple of reps are a real struggle. =)