No, you're not the church. You're part of the church. The word ἐκκλησία (ekklēsia) means "assembly," and no, you're not an assembly. Doesn't matter how overweight you are, you still aren't an assembly.
If you're a Christian, you claim Jesus as your Lord.
Where's your Lord today? He depicts Himself as walking among local assemblies (Revelation 1:12-13, 20). Do you know better than He? Which one of you is "Lord," again?
That's the church, that local assembly of believers where pastors lead, the Word is preached, the ordinances are observed, and discipline is carried out. Christ loved it and gave Himself for it (Ephesians 5:25). He died for it. But you won't walk into one? Which one of you is "Lord," again?
Before He died, He prayed for the church (John 17). But you won't attach yourself to one, to work in it and pray for it? Which one of you is "Lord," again?
Who is your pastor? Are you fool enough to say "Jesus"? Nonsense. When He ascended, He gave pastors to the church (Ephesians 4:11). Which one is your pastor, your toe-to-toe, eyeball-to-eyeball pastor?
Your "Lord" charged pastors with the care of souls. That means Jesus — your Lord, so you say — thinks your soul needs watching over (Hebrews 13:7, 17). Which individual flesh and bones living pastor is watching over your soul, in person, individually?
If "none," how is it that you decided you are smarter than Jesus? You know, Jesus. Your "Lord." Which one of you is "Lord," again?
And if you fall into unrepentant sin, which body will discipline you? Jesus says you need that, too (Matthew 18:13-20). I don't care what complex, high-sounding list of excuses you can slap together. If you say you don't need to be in a local assembly, you say you're smarter than Jesus, and are sufficient.
And remember, that Jesus you say is your "Lord" said that the second most important thing in the world is to love your neighbor (Matthew 22:39). He moved Paul to tell you your fellow-church-member is your premier neighbor (Galatians 6:10). That's where you take all that rich doctrine (Ephesians 1—3), and live it out in community (Ephesians 4—6). That's where you do all those "one anothers."
And if you tell yourself that your spouse or children are all the "one anothers" you need, you put your judgment over God's.
Meaning you're a fool and a blasphemer, whether you intend to be or not.
And bringing harm on your spouse and children, by preaching a lie to them.
That's for starters.
So, Jesus — your "Lord" — says you need to be in a local church. You say you don't?
Hm. Which one to believe? You? Or Jesus? You? Or Jesus? Hmm.
See you in church.